一般产品规定外汇结构性存款收益中属于定期存款利息的部分收取10%的利息税。（）

一物体以7m/s²的加速度竖直下落时，物体受到的空气阻力大小是物体重力的______倍．（g取10m/s²）

Industrial pollution is not only a problem for the countries of Europe and North America but also an extremely serious problem in some developing countries. For these countries, economic growth is a very important aim. They want to introduce industries, and so they put few controls on the industries which cause pollution.

Cubatao, an industrial town of 85 000 people in Brazil, is an example of the connection between industrial development and pollution. In 1954, Cubatao had no industry. Today it has more than twenty large factories, which produce many pollutants. The people of the town are suffering from the poisonous matter in their environment and the bad effects can be clearly seen. Birth shortcomings are extremely common. Among children and adults, lung problems are sometimes twelve times more common in Cubatao than in other places.

It is true that Brazil, like many other countries, has laws against pollution, but these laws are not enforced strictly enough. It is cheaper for companies to take no notice of the laws and pay the fines than to buy the expensive equipment that will reduce the pollution. It is clear, therefore, that economic growth is more important to the government than to the health of the workers. However, the responsibility does not completely lie with the Brazilian government. The example of Cubatao shows that international companies are not acting in a responsible way either. A number of the factories in the town are owned by large companies from France, Italy, and the US. They are doing things in Brazil that they would not be able to do at home. If they caused the same amount of pollution at home, they would be severely punished or even put out of business.

Why do some foreign companies like to set up their plants in Brazil（）

A. The investment environment in Brazil is suitable for them.

B. They will not be severely punished if they cause pollution in Brazil.

C. They can make much money because they do not have to pay Brazilian workers much.

D. They can act in an irresponsible way in Brazil because there are no pollution laws there.

男，32岁。因左侧阴囊肿大伴尿频4个月入院。入院后查体：左侧阴囊肿大，有波动感，透光试验阳性，左侧睾丸大小正常，左侧附睾肿大，表面不光滑，与阴囊皮肤粘连，左侧输精管增粗，表面可扪及串珠样改变，轻度压痛。血常规及肾功能检查正常，尿常规提示：WBC++，RBC+。

如患者尿培养未见细菌生长，结核抗体阳性，血沉35mm／h，胸片可见陈旧灶，尿结核菌阳性，对该患者的诊断应考虑哪些（）

A.慢性肾盂肾炎

B.左侧睾丸鞘膜积液

C.肺结核

D.左侧附睾结核

E.泌尿系结核

F.膀胱结核

高层公共建筑是指建筑高度大于等于（）米。

在最坏情况下，堆排序需要比较的次数为______。