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【单选题】
下面是某种RNA的概念图，有关叙述不正确的是 [ ]A.
①表示的碱基有4种
B.
②表示的糖属于六碳糖，是一种单糖
C.
④在细胞质和细胞核中都有分布
D.
⑤与核糖体结合后发挥模板作用
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【单选题】Tom has _____ in the English contest _____ all the students he works the hardest. [ ]
A.
come out the first; because
B.
come up first; because of
C.
come out first; because of
D.
come up the first; because
【简答题】介绍指导孕妇自测胎动的方法。
【单选题】Tom will go to the Great Wall as soon as he ______ to Beijing.
A.
will come
B.
comes
C.
come
【简答题】阅读理解。 Tom was from Canada and he had come to New York for a holiday. One day he was not feeling well, so he asked a man of his hotel to find a doctor. The man said, 'Thomas Brown is a good doctor.' To...
【单选题】—Do you know if he________ to play football with us? —I think he will come if he _________ free tomorrow.
A.
comes; is
B.
comes; will be
C.
will come; is
D.
will come; will be
【单选题】听力原文：W: I wonder if Tom will come. It's already 10: 00, and he was supposed to come at 9:00. M: He told me he would start 30 minutes earlier. Maybe something happened to him. Q: How long have the man ...
A.
1 hour.
B.
30 minutes.
C.
1.5 minutes.
D.
2 hour.
【单选题】—I wonder if he _______ here to join us tomorrow? —Don't worry, he will come if it ________ fine tomorrow. [ ]
A.
will come; will be
B.
will come; is
C.
come; will be
D.
come; is
【单选题】I am not sure if Tom _____ home. If he _____, I'll call you. [ ]
A.
will come, will come
B.
comes, will come
C.
will come, comes
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