单选题
已知f(x)=e?55xx!其中x=0,1,2,...。此时，f(x)为（）。
题目答案
B
您的答案
答案解析
暂无解析
举一反三
Joseph was very lucky （）with his life ; he almost did not get out of the room.
题目答案
B
您的答案
答案解析
「句意」 约瑟夫幸运地逃了性命;他险些没从房间里逃出来。
As early as in the development of agriculture,men discovered how to make alcoholic drinks from grapes and corn.
题目答案
B
您的答案
答案解析
暂无解析
Paragraphs 2 and 3 explain ________.
题目答案
C
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答案解析
暂无解析
Bread and butter（）liked by Westerners.
题目答案
A
您的答案
答案解析
「句意」 黄油面包受西方人青睐。
The teacher, rather than the students, is responsible for this matter.
题目答案
B
您的答案
答案解析
暂无解析
The author tells us in paragraph 4 ________.
题目答案
D
您的答案
答案解析
暂无解析
Middle School students______ not to smoke.
题目答案
C
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答案解析
暂无解析
The back garden of our house contains a lawn ，（） very pleasant to sit on in summer.
题目答案
A
您的答案
答案解析
「句意」 我家的后花园有一片草坪，夏天坐在上面会令你心旷神怡。
The best title for the passage would be ________.
题目答案
C
您的答案
答案解析
暂无解析
He set up in business（）his own and was very successful.
题目答案
C
您的答案
答案解析
「句意」 他独自一人开始经商，并且做得很成功。