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【单选题】
在第鞭毛虫生活A.
只有滋养体时期
B.
既有鞭毛体时期，又有无鞭毛体时期
C.
只有包囊时期
D.
既有滋养体时期，又有包囊时期
E.
既有滋养体时期，又有包囊、假包囊时期
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举一反三
【单选题】In the author's opinion, the countries that conquered a large number of other countries are ______.
A.
as cruel as, or even more cruel than, animals or savages
B.
more efficient in getting others to fight bravely for themselves
C.
possibly the weaker ones to settle disputes in a peaceful way
D.
likely the most powerful in some senses but not the most civilized
【简答题】中国道路有其()，即“改革开放”的伟大实践。 A阶段性的前进进程 B开创性的标志 C明确的主题内涵 D现实的实践依据
【简答题】位寻址区的字节地址范围是 ,共有 个字节,共有 个位,位地址范围为 。
【单选题】-Would you please give this MP3 to Mary ? -Sure. I’ll give it to her ______ she comes back..
A.
before
B.
as soon as
C.
till
D.
unless
【简答题】阅读理解。 I'm taking my family to other countries to have a trip. My wife, I and our two children are all going along. My elder brother has decided to go with us. He has never been overseas (出国) and he is...
【简答题】根据短文内容，回答下列问题。 Most new babies were born in the developing countries. These countries are found in Africa, South America and parts of Asia. In the developed countries of Europe and North America, the ...
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