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Why is it only female mosquito that bites？A．She is more unfriendly than male.B．She is grea

Why is it only female mosquito that bites？

A．She is more unfriendly than male.

B．She is greater in number.

C．Blood is her favorite food.

D．Blood enables her to lay eggs.

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更多“Why is it only female mosquito…”相关的问题

第1题

If you ask why I plan to study in the United State

s， the only answer is that it is a _______ for me .

A.chapter B.ceremony C.chamber D challenge

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第2题

【D5】JOHN: OH ANNE, THAT WAS A WONDERFUL DINNER. THAT" S THE BEST MEAL I" VE HAD IN A LONG

【D5】

JOHN: OH ANNE, THAT WAS A WONDERFUL DINNER. THAT" S THE BEST MEAL I" VE HAD IN A LONG TIM

E. ANNE: OH, THANK YOU! THANK YOU VERY MUC

H. JOHN: CAN I GIVE YOU A HAND WITH THE DISHES？ ANNE: UH-UH, DON"T BOTHER.【D5】______HEY, WOULD YOU LIKE ME TO FIX SOME COFFEE？ JOHN: UH, THANKS A LOT. I"D LOVE SOM

E. UH, WOULD YOU MIND IF I SMOKE？ ANNE: WHY, NOT AT ALL HERE, LET ME GET YOU AN ASHTRAY. JOHN: AW, THANKS VERY MUC

H...OH, ANNE, 【D6】______ ANNE: ACTUALLY, I" VE ONLY JUST LEARNED HOW, YOU KNOW. IT" S BECAUSE I" VE BEEN TAKING THESE COURSES. JOHN:WHY, I CAN"T COOK AT ALL, CAN"T EVEN BOIL AN EG

G. ANNE: NO KIDDIN

G.【D7】______YOU COULD TAKE A COUPLE OF CLASSES OVER AT SHERIDAN COLLEGE AND LEARN HOW TO DO IT TOO. JOHN:AW, THANKS A LOT. A. I DIDN" T REALIZE YOU WERE SUCH A GOOD COO

B. I"LL DO THEM MYSELF LATER.

C. WELL, YOU KNOW, IF YOU WANT TO,

D. DO YOU MAKE IT BY YOURSELF？

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第3题

【D6】JOHN: OH ANNE, THAT WAS A WONDERFUL DINNER. THAT" S THE BEST MEAL I" VE HAD IN A LONG

【D6】

JOHN: OH ANNE, THAT WAS A WONDERFUL DINNER. THAT" S THE BEST MEAL I" VE HAD IN A LONG TIM

E. ANNE: OH, THANK YOU! THANK YOU VERY MUC

H. JOHN: CAN I GIVE YOU A HAND WITH THE DISHES？ ANNE: UH-UH, DON"T BOTHER.【D5】______HEY, WOULD YOU LIKE ME TO FIX SOME COFFEE？ JOHN: UH, THANKS A LOT. I"D LOVE SOM

E. UH, WOULD YOU MIND IF I SMOKE？ ANNE: WHY, NOT AT ALL HERE, LET ME GET YOU AN ASHTRAY. JOHN: AW, THANKS VERY MUC

H...OH, ANNE, 【D6】______ ANNE: ACTUALLY, I" VE ONLY JUST LEARNED HOW, YOU KNOW. IT" S BECAUSE I" VE BEEN TAKING THESE COURSES. JOHN:WHY, I CAN"T COOK AT ALL, CAN"T EVEN BOIL AN EG

G. ANNE: NO KIDDIN

G.【D7】______YOU COULD TAKE A COUPLE OF CLASSES OVER AT SHERIDAN COLLEGE AND LEARN HOW TO DO IT TOO. JOHN:AW, THANKS A LOT. A. I DIDN" T REALIZE YOU WERE SUCH A GOOD COO

B. I"LL DO THEM MYSELF LATER.

C. WELL, YOU KNOW, IF YOU WANT TO,

D. DO YOU MAKE IT BY YOURSELF？

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第4题

【D10】SPEAKER A: HELLO. CAN I BE OF SERVICE TO YOU？ SPEAKER B: I" M JUST WINDOW SHOPPING.

【D10】

SPEAKER A: HELLO. CAN I BE OF SERVICE TO YOU？ SPEAKER B: I" M JUST WINDOW SHOPPIN

G. SPEAKER A: YOU ARE ALWAYS WELCOM

E. 【D8】______ SPEAKER B: THEY LOOK VERY INTERESTING, ESPECIALLY THE YELLOW GOWNS. SPEAKER A: THEY ARE IMPERIAL GOWNS. ANCIENT CHINESE EMPERORS WEAR THE

M. YELLOW IS A NOBLE COLOR TO CHINESE PEOPL

E. THE IMPERIAL LAWS FORBADE THE ORDINARY PEOPLE TO WEAR YELLOW. SPEAKER B: DID THEY？ BUT【D9】______ SPEAKER A: CULTURES DIFFER FROM COUNTRY TO COUNTRY. WHY NOT TRY THEM ON？ SPEAKER B: HOW MUCH SHOULD I PAY YOU FOR TRYING IT ON？ SPEAKER A: FREE OF CHARG

E. SPEAKER B: THAT" S FIN

E. IS THIS YELLOW TOO BRIGHT FOR ME？ SPEAKER A: IT" S A VERY BRIGHT YELLOW, BUT IT LOOKS TERRIFIC ON YOU. SPEAKER B: DOES IT？ WHAT SIZE IS IT？ SPEAKER A: IT" S SIZE 8. SPEAKER B: BUT I WEAR SIZE 10. SPEAKER A: HERE IS ANOTHER GOW

N. IT" S SIZE 10. TRY IT O

N.【D10】______. WHY NOT TAKE ONE AS A SOUVENIR？ IT" S CHEAP. ONLY 100 YUA

N. SPEAKER B: THAT" S A GOOD IDEA. I"LL TAKE IT. A. YOU LOOK SO SMART IN THE IMPERIAL GOW

B. DO YOU WANT TO TRY ANY OTHER SIZE AGAIN？

C. WE SELL ALL KINDS OF THINGS USED IN ANCIENT CHINESE IMPERIAL PALACES.

D. IN MY COUNTRY PURPLE IS ASSOCIATED WITH BEING NOBL

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第5题

【D8】SPEAKER A: HELLO. CAN I BE OF SERVICE TO YOU？ SPEAKER B: I" M JUST WINDOW SHOPPING.

【D8】

SPEAKER A: HELLO. CAN I BE OF SERVICE TO YOU？ SPEAKER B: I" M JUST WINDOW SHOPPIN

G. SPEAKER A: YOU ARE ALWAYS WELCOM

E. 【D8】______ SPEAKER B: THEY LOOK VERY INTERESTING, ESPECIALLY THE YELLOW GOWNS. SPEAKER A: THEY ARE IMPERIAL GOWNS. ANCIENT CHINESE EMPERORS WEAR THE

M. YELLOW IS A NOBLE COLOR TO CHINESE PEOPL

E. SPEAKER B: THAT" S FIN

N. IT" S SIZE 10. TRY IT O

N.【D10】______. WHY NOT TAKE ONE AS A SOUVENIR？ IT" S CHEAP. ONLY 100 YUA

N. SPEAKER B: THAT" S A GOOD IDEA. I"LL TAKE IT. A. YOU LOOK SO SMART IN THE IMPERIAL GOW

B. DO YOU WANT TO TRY ANY OTHER SIZE AGAIN？

C. WE SELL ALL KINDS OF THINGS USED IN ANCIENT CHINESE IMPERIAL PALACES.

D. IN MY COUNTRY PURPLE IS ASSOCIATED WITH BEING NOBL

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第6题

In the year 2100, the world is going to have a population of about 8 billion. Most scienti

sts agree that the most severe problem is food supply. Who is going to feed all these people？ Where is the food going to come from？ Are we going to have enough food？ Are we going to produce more artificial foods？ One way of improving the situation is for people to eat less meat. Why？ Because it takes 4 kilos of grain protein(蛋白质)to produce half a kilo of meat protein. Clearly, there is not going to be sufficient meat protein for 8 billion people. Therefore, it will also be necessary to change eating habits because meat is the main part of many people s food today. A possible solution to this latter problem is the soybean(大豆). The soybean plant produces beans which have a very high fat and protein content. Scientists can now make these look and taste like real meat. They can also make many other artificial products such as soybean milk, for example, which has a taste of milk and can be used in cooking in very much the same ways as cow s milk. In fact, one woman in the United States fed her family only on soybeans for a year! She gave them soybean beef, soybean chicken, soybean milk, and sometimes just soybeans. Possibly, we are all going to eat soybeans in the future and finally give up meat completely from our tables.

What is the main subject of the passage？

A．A solution to man"s food problem.

B．A solution to the population problem.

C．Advantages of soybean.

D．How to develop good eating habits.

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第7题

根据下列材料回答下列各题。 Passage Four Why is there no risk to the customer when a ba

nk prints the customer’s name to his cheques？ Wenn yone opens a cuITent account at a bank，he is lending the bank money，repay．ment of which he mayDemand at any time，either in cash or byDrawing a check in favor of an-other person. Primarily，the bank—customer relationship is that ofDebtor and creditor-who iswhichDepending on whether the customers account is in credit or overdrawn．But．in additionto that basically simple concept，the bank and its customer owe a large number of obligations toone another.Many of these obligations Can give rise to problems and complications but a bankcustomer,unlike，say，a buyer of goods，cannot complain that th．e law is loaded against him．The bank must obey its cUStomers instructions，and not those of anyone else．When, forexample，a customer first opens an account，he instructs the bank toDebit(把……记入借方)his aecount only in respect of ehecksDrawn by himself．He gives the bank specimens of his819nature，and there is a very firm rule that the bank has no right or authority to pay out acustomer’s money on a check on which its customers signature has been forged．It makes nodifference that the fbrgery may haye been a very skillful one：the bank must recogllize itscustomers signature．For this reason there is no risk to the customer in the practice，adoptedday banks，of printing the customers name on his checks．If this facilitates forgery，it is thebank which will lose，not the customer． When you have a bank account，you_________．

A.must always be in credit

B.Can’t draw any money if you’re overdrawn

C.can draw money without notice

D.Can’t pay money to anyone else

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第8题

The timing of flu season is a little hard to predict. Part of what makes it unpredictable

is that scientists still don t understand exactly why we have one at all. There have been lots of theories: One theory is that people spend more time indoors, with the windows closed, breathing each other s air. Other scientists have argued that cold of winter weakens our immune systems. A third theory is that the flu virus lives in the cold, dry air, but suffers in the warm, humid air. For a while, scientists had a hard time testing these theories: they needed to run experiments, but researchers aren t allowed to infect humans with illnesses, and most lab animals arent affected by the flu the same way people are. In 2007, a medical researcher named Peter Palese found an 80-year-old journal article that reported that guinea pigs (豚鼠)get infected and pass on the flu just like humans. Palese decided to test Theory 3. The research team led by Palese ran several experiments and in each experiment, they injected half the guinea pigs with influenza A (the common flu), and put them in a box next to a box of uninfected animals. At a temperature of 41 degrees, all four of the exposed guinea pigs caught the flu, but when Palese repeated the experiment at 68 degrees, only one of the animals was infected. And when he ran the test at 86 degrees, none of the exposed animals got sick. The researchers also ran experiments where they varied the humidity in the room but kept the temperature constant: the drier the air, they found, the more animals got sick. Palese s study showed that the influenza virus does spread more effectively in cold, dry air.

What does Paragraph 3 mainly discuss？

A．The direction for future research.

B．The necessity of running more tests.

C．The difficulty of testing the theories.

D．The cost of animal experiments.

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第9题

"Freshman fifteen" is a term which means fifteen pounds, or about seven kilograms— the wei

ght students might expect to gain in their first year of college. People used to talk about the "freshman ten." Before that, it was the "freshman five." Are freshman more inflated, or just the expression？ The fact is, many young men and women do put on extra weight when they start college. Some schools that have done research on the issue including Cornell University in Ithaca, New York, have found that freshmen gain an average of four pounds during their first twelve weeks, the equivalent of two kilograms. If weight gain continues at this rate, how long before they put on fifteen pounds？ The answer is forty-five weeks, or almost a year. The next question is, why do so many freshmen gain weight？ The answers listed by experts are not so surprising. One is poor diet: College students often eat foods high in fat and sugar and starch with no parents around to say no to junk food. Students may also miss meals. They could be in class or studying or just ... busy. In any case, those who miss meals are more likely to overeat when they do have food. Also, freshmen often use food to put their mind at ease. They have college pressures to deal with. Not only that, many are living away from home for the first time. Another reason college students gain weight is that they often do not get enough exercise. Finally, there is something else that can add up to the "freshman five" or ten or fifteen, alcohol. Alcohol is high in calories and this is especially true of beer. And, no, freshmen are not supposed to be drinking, not unless they are twenty-one, the legal drinking age in America. For many college students, the extra weight they put on in their freshman year can be as hard to escape as term papers and final exams.

Paragraph 1 is centered on______.

A．why freshmen put on weight in college

B．why freshmen worry about their weight

C．how the "freshman fifteen" gets its name

D．how the "freshman fifteen" amazes freshmen

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第10题

Long ago, in days of the Roman Empire, people used to believe a god of farming called

“Saturn”. They believed that Saturn could make the weather good or bad, and that he had the power to control how much rain would fall.

Before a Roman farmer would plant his fields, he would try to get Saturn to give him good weather. He believed that if he killed an animal for Saturn, he would make Saturn happy. Then Saturn would make sure that the weather was good.

Not only did the people name a planet after Saturn but they also name a day of the week after him. They called this day “Saturn dies”, Latin words which mean “day of Saturn”. In English those words became Saturday.

(1) What was Saturn believed to be in charge of？

A.Rainfall.

B.The power of nature.

C.Farming.

D.Days in a week.

(2) Why did a Roman farmer kill an animal before planting his fields？ Because_______.

A.killing an animal would bring him good luck

B.Saturn enjoyed eating animals

C.Saturn was happy to see animals being killed

D.he wanted to please Saturn so that Saturn would make the weather good for his planting

(3) What was the correct order of what a Roman farmer did before planting his fields？

a. observing the weather