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【简答题】
听力：What did Ben Carson classmates and teachers think about him when he was first in school? Q: What did Ben Carson classmates and teachers think about him when he was first in school? A.Careless. B.Stupid. C.Brave. D.Active.
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举一反三
【单选题】There is a police car in front of the house of our neighbour's. _____ do you think _____ ？
A.
What；has happened
B.
What；of happening
C.
What；of being happened
D.
Whatever；of happening
【简答题】在公式s=vt+5t 2 中，已知s、t（t＞0），那么v=______（用s、t的代数式表示）．
【简答题】在公式s=50t中常量是______，变量是______．
【单选题】下列有关初生演替和次生演替的叙述中，正确的是（）
A.
沙丘上进行的演替是初生演替，火山岩上进行的是次生演替
B.
初生演替形成的群落内无竞争现象，次生演替形成的群落内竞争明显
C.
初生演替所需时间较长，次生演替所需时间较短
D.
初生演替能形成森林，次生演替很难形成森林
【单选题】There has been no _____ so far from the police about the cause of the poor girl's death after the college entrance examination. [ ]
A.
comment
B.
command
C.
discussion
D.
reaction
【单选题】She's a police officer, so she has to wear a ________ at work.
A.
uniform
B.
police suit
C.
dress
D.
clothes
【简答题】在公式v=av 0 +2t中，已知v=100，v 0 =20，t=4，则a=______．
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