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问题 单项选择题

甲公司与施工企业签订建筑材料买卖合同后，立即与生产厂家乙公司签订了一份购买合同。由于乙公司的资金短缺，无法保证向甲公司的供货，致使施工企业未能及时收到建筑材料而停工。则施工企业的损失应当由( )承担。

A．甲公司

B．乙公司

C．施工企业

D．甲公司和乙公司连带

答案

参考答案：A

填空题

为了使WTO的各成员方在制定、批准和（）技术法规时，不会给国际贸易造成不必要的障碍，WTO/TBT对各成员方制定技术法规提出了要求。
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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.

8（）

A.for

B.of

C.to

D.on
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