阅读理解
    Different weather makes people feel different．It influences health，intelligence and feelings．
    In August，it is very hot and wet in the south the US．People there have heart trouble and other kinds of health problems during this month．In the Northeast and the Middle West，it is very hot in the summer and very cold in the winter．People in these states have more heart trouble after the weather changes in February or March．
    The weather can also influence intelligence ． For example，in a 1983report by scientists，IQ(智商)of a group of students was very high when a very strong wind came, but after the strong wind,
    Their IQ was 10% lower than before. The wind can help people have higher intelligence. However,very hot weather can make it lower. Students in many schools of the US often get worse in exams(考试)in the hot months of the year(July and August).
    Weather also has a strong influence on people's feelings．Winter may be a bad time for thin people．They usually feel cold during these months．They might feel unhappy during cold weather．But fat people may have a hard time in hot summer．At about 18℃people become stronger．Low air pressure may make people forgetful．People leave more bags on buses and in shops on low-pressure days．
    Are you feeling sad，tired，forgetful，or unhappy today？It may be the weather's problem．

引号用法。选择下面句子引号的用法。

A．表示直接引用的话；B．表示特定的称谓或需要着重指出的部分；C．表示讽刺或否定；D．表示突出强调；E．用来引用成语、谚语、歇后语等。

①地球是茫茫宇宙中一颗美丽的蓝色“水球”。____

②在喜怒无常的海洋面前，人民只能“望洋兴叹”。____

用加下划线的词语写句子。

例：各式各样的议论被海潮冲走了。

下列有关焰色反应的叙述中正确的是

填入下面一段文字横线处的语句，最恰当的一句是（    ）

血栓闭塞性脉管炎又称“脉管炎”，虽是一种血管的炎症，但并不是细菌感染引起的的，而是血栓阻塞血管、血流减少所致，主要以下肢为主。脉管炎后期可引起手足发黑、坏死。但____________，如果在早期能明确诊断，及时治疗，可以避免发生严重的后果。