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问题 填空题
观察下列一组按规律排列的数：
1
2
，
1
4
，
1
8
，
1
16
，…，第2011个数是______．
答案

∵

1
2
=
1
21

1
4
=
1
22

1
8
=
1
23

…

∴第2011个数是

1
22011
，

故答案为

1
22011
．

填空题
词汇运用。
     从方框中选择适当的单词或短语完成句子。
translate, report , provide, hold on to, educational, general, possible, willing, including, come true
1. I hope my dreams will _____ one day.
2. This company will _____ us with free lunch.
3. A _____ was made at the meeting by the headmaster yesterday.
4. In _____, eating more fruits and vegetables can make us healthy.
5. The man is kind. He is _____ to help others when they are in trouble.
6. Please write back as soon as _____.
7. If you _____ your dreams, you will succeed one day.
8. He doesn't understand English, so I offered to _____ for him.
9. He can speak many foreign languages _____ Russian.
10. This is the most _____ experience I have ever had.
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单项选择题

确诊流行性出血热的依据是

A．鼠类接触史
B．全身感染和中毒症状
C．“三痛”和“三红”征
D．特异性IgM抗体滴度升高
E．异型淋巴细胞增多
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