When linguists write grammars or lexicographers compile dictionaries they must use me
My sister ______ (write)a letter when somebody dropped in on her.
B.carefully
C.more careful
D.more carefully
参考答案:错误
A.when
B.which
C.what
D.whose
(1)Write the possible values of l when n=5.
(2)Write the allowed number of orbitals (a) with the quantum numbers n=4,l=3;(b) with the quantum numbers n=4;(c) with the quantum numbers n=7,l=6,m=6;(d) with the quantum numbers n=6,l=5.
When a solution of Na2S2O3is introduced into a solution of HCl, a cloudiness develops almost immediately. Write a balanced net-ionic equation explaining this phenomenon.
A.How Web pages are put together.
B.How to write software.
C.How to surf the Internet.
D.How to drive cars.
The post office says the stamp is useless when ______ .
A.you buy it
B.you write a letter
C.put a letter into a postbox
D.it has a postmark on it
the people _7_ did not know how to write
A.when and where
B.of when and where
C.that time and place
D.of that time and place
It can be learned from the passage that Nick
A.began to write software at the age of 12
B.developed Summly with his parents" help
C.earned a high income when he was 15
D.was attracted by Hollywood stars
Please write and let me know () university clubs I am eligible to join.
A、when
B、which
C、what
D、whose