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【单选题】
依次填入下列各句横线处的词语，最恰当的一项是： ①生物都要新陈代谢，细菌又______不是如此。 ②要完成这个课题的实验研究，______需要三年的时间。 ③翻开手稿一看，______所有的地方笔改过，只有几处没有改动。A.
何尝 大体 似乎
B.
未必 大致 几乎
C.
何尝 大致 几乎
D.
未必 大体 似乎
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举一反三
【单选题】—_____ last Sunday? —It was cold and snowy. [ ]
A.
What was the weather
B.
How was the weather
C.
How was the weather like
D.
What the weather like
【简答题】It was very cold last Sunday. Paul and his friends Allen, Bill and Betty went to the lake after breakfast. They began to skate on the ice. Paul skated better than his three friends. He skated fast and...
【简答题】测得工作在放大电路中某个晶体三极管的两个电极电流如图所示。 ( 1 )求另一个电极电流,并在图中标出实际方向。 ( 2 )判断它是 NPN 还是 PNP 型管,标出 E 、 B 、 C 极。 ( 3 )估算它的 β 。
【简答题】从方框中选择合适的选项完成短文。 Last Sunday My class went to the Central Zoo last Sunday. It was our first journey and we were all very happy. 1 Halfway to the zoo we stopped at a station because the driver of the b...
【单选题】如图所示电路中,测得工作在放大状态的某个晶体三极管两个电极电流,则第三个电极的电流大小、方向和管脚自左到右的顺序分别为( )。
A.
0.03mA,流进三极管:c、e、b
B.
0.03mA,流出三极管:c、e、b
C.
0.03mA,流进三极管:e、c、b
D.
0.03mA,流出三极管:e、c、b
【单选题】—What did you do last Sunday? —It was a hard Sunday. I ______ all day. [ ]
A.
watched TV
B.
went to the restaurant
C.
studied for my math test
D.
played computer games
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