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问题 单项选择题

下列哪一项不是肠产毒性大肠埃希菌的特性( )

A．常见于婴幼儿和旅游者腹泻
B．致病物质包括不耐热肠毒素
C．致病物质包括耐热肠毒素
D．可以是轻度腹泻，也可呈严重的霍乱样症状
E．血性结肠炎

答案

参考答案：E

阅读理解

阅读理解。

1. If you want to have a swim, which of the two hotels do you choose?

A. Beijing Hotel

B. Changcheng Hotel

C. Neither

D. Both

2. If we travel around National Day(国庆节), how much should you pay?

A. ￥899

B. ￥999

C. ￥799

D. ￥1299

3. When can't we book(预订) by telephone?

A. 9:00 a.m. Monday

B. 9:00 p.m. Thursday

C. 9:00 a.m. Saturday

D. 9:00 p.m. Sunday

4.How many ways are mentioned(提到) if you want to know more information about the trip?

A. One

B. Two

C. Three

D. Four

5. Which of the following is true?

A. Beijing Hotel has gardens with mountain views.

B. Changcheng Hotel has no buses to the downtown.

C. For more information, you can call 0514-7654321.

D. The price for Jun. 8, 2010 is the lowest.
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单项选择题

影响社会认知的客观因素是（）

A.交往场合

B.环境特点

C.认知对象的特点

D.认知对象的特点和环境特点
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