手电筒内两节新干电池串联的总电压是（      ）

English Around the World

    There are more than 3,000 languages ____（speak）in the world. Of all these languages, English is the most ____(wide) used. Recent ____(survey) show that more than 500 million people speak English as their mother tongue.

    From its roots in England, the language was spread around the world ____English traders and English governments in new lands. One of these new lands ____(become) the United States of America. The population of the United States is 309 million,____ (make) it the country with the ____large) number of native English speakers.

    About 300 million people speak English as their second language. There are even more people, like some in Europe as well as in China and Japan,____ study English as a foreign language.

    English has become the base language for international business, for the world's airlines and even for the Internet. Whatever language people speak, they need  ____(know) some English if they work in these fields.____ is clear that the English language is becoming more important.

同纬度甲乙两地海拔分别是720米和1720米，甲地气温28.8℃，乙地气温为（   ）。

用诗文原句填空。
①关关雎鸠，                 。                        （《诗经·周南》）
②欲穷千里目，                  。                  （王之涣《登鹳雀楼》）
③                  ，直挂云帆济沧海。                  （李白《行路难》）
④                  ，一览众山小。                        （杜甫《望岳》）
⑤大漠孤烟直，                  。               （王维《使至塞上》）
⑥不畏浮云遮望眼，                  。              （王安石《登飞来峰》）
⑦                 ，化作春泥更护花。            （龚自珍《己亥杂诗》）
⑧故天将降大任于是人也，              ，劳其筋骨…… （《〈孟子〉两章》）
⑨刘禹锡在《陋室铭》中说：“                ，                。”这表明他所交往的都是有修养的饱学之士。