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问题 单项选择题

只有欧盟停止从第三国进口农产品并且非洲的安全得到了保障，国际绿色组织的志愿者才能显著增加。非洲的安全保障来源于整个国际社会的共同努力，但是国际上一些大国之间的利益冲突导致这种努力是不可能实现的，由此可见( )。

A．欧盟已经停止从第三国进口农产品
B．欧盟没有停止从第三国进口农产品
C．国际绿色组织的志愿者没有显著增加
D．国际绿色组织的志愿者显著增加

答案

参考答案：C

解析：[命题提示]
逻辑推理题
[解题要点]
运用逻辑基本规则解题

把题干转换为公式为：①P∧Q←R(P表示欧盟停止从第三国进口农产品；Q表示非洲的安全得到保障；R表示国际绿色组织的志愿者增加)：②┐Q。把②代入①中，根据直言判断否定一肢则否定判断，可知③┑(P∧Q)；把③代入①中根据必要条件假言推理否定前件可以否定后件规则，可得：④┑R，即：国际绿色组织的志愿者没有显著增加。故选C。

单项选择题

More and more residences, businesses, and even government agencies are using telephone answering machines to take messages or give information or instructions. Sometimes these machines give (1) instructions, or play messages that are difficult to understand. If you (2) telephone calls, you need to be ready to respond when you get a (3)

The most common machine is the (4) used in residence. If you call a home (5) there is a telephone answering machine (6) you will hear several rings and then a recorded message that (7) says something like this: "Hello. We can’t come to the (8) right now. If you want us to call you back, please leave your name and number after the beep." Then you will hear a "beep", (9) is a brief, high-pitched (10) . After the beep, you can say who you are, whom you want to speak to, and what number the person should call to (11) you, or you can leave a (12) . Some telephone answering machines record for only 20 or 30 seconds after the beep, (13) you must respond quickly.

Some large businesses and government agencies are using telephone answering machines to provide information on (14) about which they receive a large volume of (15) . Generally speaking, using these systems (16) you to have a touch-tone phone ( a phone with buttons rather than a rotary dial). The voice on the machine will tell you to (17) a certain button on your telephone if you want information on Topic A, another button for Topic B, and so on. You listen (18) you hear the topic you want to learn about, and then you push the (19) button. Immediately after making your (20) , you will hear a recorded message on the topic.

11（）

A．disturbing

B．annoying

C．confusing

D．surprising
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单项选择题

姜黄与郁金的区别是（）

A．同科不同属植物

B．同属不同种植物

C．同种植物，药用部位不同

D．不同科植物

E．不同植物，药用部位相同
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