1994×2006-1993×2007=( )A.3 B.13 C.23 D.33

题型:单项选择题

问题:

1994×2006-1993×2007=( )

A.3

B.13

C.23

D.33

考点:国家公务员行政职业能力测试行政职业能力测试
题型:单项选择题

下列叙述中,属于气候的是(  )

A.今天风和日丽

B.海南岛全年皆夏

C.夜来风雨声,花落知多少

D.明天有暴风雨

题型:单项选择题

小麦和水稻属于____。

A.自花授粉作物

B.异花授粉作物

C.常异花授粉作物

D.无性繁殖作物

题型:单项选择题

被灭活的病毒不能保留的特性是()

A.抗原性

B.红细胞吸附性

C.感染性

D.血凝性

E.细胞融合

题型:单项选择题

验证酒精对水蚤心率的影响:实验室常用体积分数为95%的酒精配制不同浓度的酒精溶液。学生在实验时配制如下的不同浓度梯度的酒精:1%、3%、5%、8%、10%、15%、20%等。在15℃左右的室温中经过大量的实验,并在实验中选择10秒内水蚤跳动范围在30~36次之间的成年水蚤为材料,经过多次实验得到以下平均数值。现将在不同酒精浓度梯度下的水蚤在10秒内的心脏跳动次数列表如下:

酒精浓度清水1%3%5%8%10%15%20%
10秒内心脏跳动次数33302824222118死亡
 根据上述实验结果,回答下列问题:

(1)将以上数据转在坐标系内表示出来,并将其连成一条曲线。

(2)上述图表表明,水蚤心率很容易受到___________的影响,即水蚤心率会随着酒精浓度的增加而______________。

(3)当酒精的体积分数达到20%时,水蚤会因为酒精浓度过大而导致___________。分析其原因,就很容易得出,酒精具有______________作用,所以会减缓心脏的跳动。

题型:单项选择题

More than 10,000 people were made homeless in Ternang when the Sungai Mas overflowed its banks yesterday after six days of continuous heavy rain.

The wooden bridge across the river has been washed away. The town is cut off by flood waters. At the fifth mile, Jalan Tengkn, the water is two meters deep. It is closed to all traffic. Flooding first happened at mid-afternoon yesterday along the river banks. People trying to get to higher ground were just in time to escape the destroying of the flood. Most of the flood victims(受害者) had to leave all their things behind.

The National Flood Relief(救济) Center was reported to give its help and by early evening the whole town was moved out, helped by the army, police, Red Cross Society and volunteers(志愿者).

The flood victims are now housed in different simple relief centers in the nearby town of Ternang. “Everything possible is being done to help the unlucky people,” a government spokesman said, “In fact, money, food and clothing have begun to come in from public organizations and helpful people. A Disaster Relief Fund(救灾基金会) will be started as soon as possible.”

According to the latest reports it is still raining heavily at Ternang. The whole town is expected to be wholly covered by the water. So far no deaths have been reported.

64. This passage is probably taken from ______.

A. a storybook              B. a textbook         C. a magazine        D. a newspaper

65. It seems that the flood happened just because ______.

A. the banks were too low                   B. the wooden bridge across the river was broken

C. the river was too narrow                 D. they had had wet days for some time

66. From the passage we know that ______.

A. though the town was flooded, you could still go there by bus

B. as soon as the water flowed over the banks, people began to go to higher lands

C. the government and the whole society are taking great care of the flood victims

D. the flood hasn't brought a large loss to the town as nobody died in the flood

67. What is the best title for this passage?

A. A Big Flood                                                B. Ternang Is in Danger

C. Over 10,000 People Are Homeless                 D. Great Help Is Needed

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