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问题 实践题

　　学校图书馆搬迁，清理出大量废旧书报。图书馆工作人员与南村废品收购站联系，让其派人到校收购。废品收购站人员黄东驾驶一辆车牌号为粤A-3024的货车到校处理废旧书报。按学校规定，凡外来人员离开学校，均需有明确事由的证明，以便查验放行。现在，请你以刘三桥的身份，为黄东拟写一则离开学校的放行证明（只写正文）。包括标点符号不超过48字。

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答案

南村废品收购站人员黄东，驾驶一辆车牌号为粤A-3024货车到图书馆收购废旧书报，请予以查验放行。（意对即可）

判断题

根据《中华人民共和国海关法》的规定，进口货物的收货人、出口货物的发货人、进出境物品的所有人是关税的纳税义务人。( )
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单项选择题

When a disease of epidemic proportions threatens the public, scientists immediately get to work, trying to locate the source of affliction and find ways to combat. Vaccination is one of the effective ways to protect the (1) population of a region or country which may be (2) grave risk. The process of vaccination allows the patient’s body to (3) immunity to the virus or disease so that, if it is encountered, one can fight it (4) naturally. To accomplish this, a small weak or dead (5) of the disease is actually injected into the patient in a controlled environment, (6) his body’s immune system can learn to fight the invader (7) . Information (8) how to penetrate the disease’s defenses is (9) to all elements of the patient’s immune system in a process that occurs naturally, in which genetic information is passed from cell to cell. This makes sure that (10) the patient later come into contact with the real problem, his body is well equipped and trained to (11) with it, having already done so before.

There are, however, dangers (12) in the process. (13) , even the weakened version of the disease contained in the vaccine proves (14) much for the body to handle, resulting in the immune system (15) , and, therefore, the patient’s death. Such is the case of the smallpox vaccine, (16) to eradicate the smallpox epidemic that nearly (17) the whole Native American population and killed massive numbers of settlers. (18) 1 in 10,000 people who receive the vaccine (19) the smallpox disease from the vaccine itself and dies from it. Consequently, the process, which is truly a (20) , may indeed hide some hidden curses.

16（）

A.invented

B.discovered

C.investigated

D.designed
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