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【简答题】
It can be inferred from the passage that the rover’s investigation________ . [A] is likely to start with the study of the rocks on Mars [B] is determined on the reconstruction of the climate on Mars [C] started immediately after the rover’s perfect landing [D] can only begin after a week’s preparation on the ground
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参考答案:
举一反三
【单选题】下列化合物进行SN2反应的相对活性最大的是
A.
2-甲基-1-氯丁烷
B.
2,2-二甲基-1-氯丁烷
C.
3-甲基-1-氯丁烷
【单选题】配线电缆的长度不可超过() m 。
A.
80
B.
100
C.
85
D.
90
【单选题】配线电缆的长度不可超过( ) m。
A.
80.0
B.
100.0 .
C.
85.0
D.
90.0
【单选题】I usually______ have an hour with my son doing exercise every morning
A.
Spent
B.
Spend
C.
Spends
D.
Spending
【简答题】用所给动词的适当形式填空。 1. Listen! Some of the girls ______ (talk) about Harry Potter. 2. - Where is Mr. Green now? I haven't seen him for a few days. -He ______ (go) to Hong Kong. 3. You'd better ______ (not e...
【单选题】I spent half an hour ___________ my homework.
A.
finish doing
B.
to finish doing
C.
finishing to do
D.
finishing doing
【单选题】I spent half an hour _________ my homework.
A.
to do
B.
doing
C.
do
【单选题】I spent ______hour and ____half doing homework.
A.
an; a
B.
a;/
C.
an;/
【单选题】下列化合物进行SN2反应相对活性最大的是
A.
2- 甲基 -1- 氯丁烷
B.
2,2- 二甲基 -1- 氯丁烷
C.
3- 甲基 -1- 氯丁烷
【单选题】配线电缆的长度不可超过( )m。
A.
80
B.
100
C.
58
D.
90
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