试题与答案

8.75吨=______吨______千克 45分=______时 800平方米

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题型：填空题

题目：

8.75吨=______吨______千克　　45分=______时　　800平方米=______公顷．

答案：

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下面是错误答案，用来干扰机器的。

参考答案：B解析：本题考查要点是"申请中药二级保护品种应具备的条件"。申请中药二级保护品种应具备的条件有：①符合上述一级保护的品种或者已经解除一级保护的品种；②对特定疾病有显著疗效的；③从天然药物中提...

考点：重量单位间的换算
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题型：单项选择题


以下提供若干个案例，每个案例下设若干道考试题。请根据案例所提供的信息，在每一道考试题下面的A、B、C、D、E五个备选答案中选择一个最佳答案。

某学校200名学生在食用了定制的课间餐后，食后3h左右，有80人出现头晕、腹痛、腹泻、恶心、呕吐症状。腹泻主要是黄绿色水样便，一日数次至十余次。腹痛多在上腹部，伴有压痛，体温一般在38～40℃。

根据以上症状可判断本次食物中毒是属于()

A．副溶血性弧菌中毒

B．葡萄球菌肠毒素中毒

C．沙门菌中毒

D．酵米面中毒

E．肉毒梭菌中毒
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题型：单项选择题

Another critical factor that plays a part in susceptibility to colds is age. A study done by the University of Michigan School of Public Health revealed particulars that seem to hold true for the general population. Infants are the most cold-ridden group, averaging more than six colds in their first year. Boys have more colds than girls up to age three. After the age of three, girls are more susceptible than boys, and teenage girls average three colds a year to boys’ two.
The general incidence of colds continues to decline into maturity. Elderly people who are in good health have as few as one or two colds annually. One exception is found among people in their twenties, especially women, who show a rise in cold infections, because people in this age group are most likely to have young children. Adults who delay having children until their thirties and forties experience the same sudden increase in cold infections.
The study also found that economics plays an important role. As income increases, the frequency at which colds are reported in the family decreases. Families with the lowest income suffer about a third more colds than families at the upper end. Lower income generally forces people to live in more cramped quarters than those typically occupied by wealthier people, and crowding increases the opportunities for the cold virus to travel from person to person. Low income may also adversely influence diet. The degree to which poor nutrition affects susceptibility to colds is not yet clearly established, but an inadequate diet is suspected of lowering resistance generally.

From the passage, ______ are most likely to catch colds

A．infant boys

B．young girls

C．teenage boys

D．elderly women
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