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下面的段位后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第1～4段每段选择1个最佳标题；(2)第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。

The Weight Experiment
1. Nicola Waiters has been taking part in experiments in Scotland to discover why humans gain and lose weight. Being locked in a small room called a "calorimeter" (热量测量室)is one way to find out. The signs above the two rooms read simply "Chamber One" and "Chamber Two", these are the calorimeters: 4m by 2m white-walled rooms where human volunteers are locked up in the name of science. Outside these rooms another sign reads, "Please do not enter-work in progress" and in front of the rooms advanced machinery registers(记录) every move the volunteers make. Each day, meals measured to the last gram are passed through a hole in the wall of the calorimeter to the resident volunteer.
2. Nicola Waiters is one of the twenty volunteers who, over the past eight months, have spent varying periods inside the calorimeter. T

更多"下面的段位后有2项测试任务：(1)第23～26题要求从所给的6个选项中"的相关试题:

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下面的段位后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第1～4段每段选择1个最佳标题；(2)第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。

Chinese Dialects (方言)

The enormous differences in Chinese dialects have been a continuing problem ever since China became an empire in 221 B. C. , and it is one big reason why the country has remained impoverished (贫穷). Of the 600 million people who call themselves Chinese, all but a very small number speak Chinese. But the dialects vary so widely that the speech of Peking, for example, is as different from the speech of Canton as English is from German.
There is to be sure, only one written language for all China, but it bears no phonetic(语音的)relationship to any of the spoken dialects. Moreover, it has so many symbols that only a tiny portion of the population has ever mastered it.
As a result, most Chinese have been isolated for centuries from a free flow of ideas and from the economic progres

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下面的短文后有2项测试任务：
(1)第23-26题要求从所给的6个选项中为第2-5段每段选择1个最佳标题；
(2)第27-30题要求从所给的6 个选项中为每个句子确定1个最佳选项。

Face Masks may not Protect from Super-flu

1 If a super-flu strikes, face masks may not protect you. Whether widespread use of masks will help, or harm, during the next worldwide flu outbreak is a question that researchers are studying furiously. No results have come from their mask research yet.
2 However, the government says people should consider wearing them in certain situations anyway, just in case. But it’s a question the public keeps asking while the government is making preparations for the next flu pandemic. So the Centers for Disease Control and Prevention (CDC) came up with preliminary guidelines. "We don’t want people wearing them everywhere. " said the CDC．"The overall recommendation really is to avoid exposure. "
3 When that’s not possible, the guidelines say to consider w

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