题目内容
16．学生们正忙着帮老人们打扫房间．The studentsare busy helping the old people clean the house．
分析 are busy helping the old people clean
解答 答案：are busy helping the old people clean．
首先通过中英文句子的比对，可知英文句子中缺少"正忙着帮老人们打扫"的表达．句式"忙于做某事"是be busy doing sth．短语"帮助某人做某事"的英文表达是：help sb．do sth..本题中，句子表述的是现在的情况，所以be动词用are，故答案为：are busy helping the old people clean
点评 做这类题型，首先根据所给汉语明确句子所要考查的单词或短语的拼写，再结合相关语法知识对单词或短语做出形式上的变化．
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15．What opinions did experts have about movement and transportation throughout history？Take a look
31．Which of the following experts was a science fiction writer？D
A．Lord Kelvin．
B．Lee DeForest．
C．Leonardo da Vinci．
D．Jules Verne．
32．Lee DeForest's opinion was thatB．
A．airplanes would never fly
B．no person would ever reach the moon
C．people would fly in a machine with an overhead propeller
D．people would be able to travel under water in airtight ships
33．How many experts'opinions proved right according to the passage？B
A．One．
B．Two．
C．Three．
D．Four．
| Lord Kelvin，a famous scientist，1800s Opinion：Airplanes would never fly． Was he right？No．On December 17，1903，the Wright brothers made the first controlled flight in a powered airplane． |
| Lee DeForest，a pioneer in radio，TV，and radar，1900s Opinion：No person would ever reach the moon． Was he right？No．On July 20，1969，Neil Armstrong stepped onto the moon． |
| Leonardo da Vinci，artist，scientist，inventor，1400s Opinion：People would fly in a machine with an overhead propeller． Was he right？Yes．This artist's sketch，made about 1490，shows a helicopter 400 years before its invention． |
| Jules Verne，science fiction writer，in an 1870 novel Opinion：People would be able to travel under water in airtight ships． Was he right？Yes．Though submarines already existed，it would be decades before they could stay submerged for long-distance travel． |
A．Lord Kelvin．
B．Lee DeForest．
C．Leonardo da Vinci．
D．Jules Verne．
32．Lee DeForest's opinion was thatB．
A．airplanes would never fly
B．no person would ever reach the moon
C．people would fly in a machine with an overhead propeller
D．people would be able to travel under water in airtight ships
33．How many experts'opinions proved right according to the passage？B
A．One．
B．Two．
C．Three．
D．Four．
4．
| A．experience B．ways C．afford D．find out E．quickly F．local G．serious H．century I．politely |
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| 40．A．in order that | B．so that | C．in order to | D．such that． |