首页 > 外语类 > 英语专业考试 > 专业英语八级 > Great as Newton was, many of his ideas ____ today and are being modified by the work of scientists of our time.

Great as Newton was, many of his ideas ____ today and are being modified by the work of scientists of our time.

A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
正确答案： C
答案分析： 【句意】尽管牛顿非常伟大，然而他的许多观点当前正受到怀疑，并且当今的许多科学家正在努力对这些观点进行修正。
【难点】challenge意为“挑战，怀疑”，常用作及物动词。本句中牛顿的观点受到挑战为一个当前已经发生的事实，故采用现在完成时的被动语态。
包含此试题的试卷：
大学专业八级英语（词汇与语法）全真模拟练习及答案解析
相关的试题
Trouble with Teamwork Mary Owen examines the role and efficiency of teams Recruiters say that candidates who can give examples ofwork they have done as members of a successful team are in asstrong ...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
Directions: In this section you will hear a recorded short passage.The passage is printed in the test paper, but with some words or phrases missing. The passage will be read two times. You are requi...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
Directions: In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A, B, C and D. Then ...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
In the past, operations were difficult. Until the middle of the eighteen fifties, surgery was very dangerous. Many patients died after even the smallest operations. This was because bacteria entered ...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
In the earliest stages of man's development he had nomore need of money than animals have.He was content with very simple forms of shelter,made his own rough tools and weapons and could provide food ...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
The agricultural revolution in the 19th century involved two things ：the invention of labor-saving machinery and the deyelopment of scientific agriculture.Labor-saving machinery naturally appeared fi...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
完型填空(本大题共 10 小题，每小题 1 分，共 10 分)从选项中选择一个最适合短文的选项，错选、多选或未选均无分。  Jogging is becoming one of the ___21___ growing activities in the nation. More people are starting jog each year. This, however, is...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
If you do not find the required information using the tips from the previous section, then you need to consult an online service to find the piece of information you were looking for. Three different...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
In what seems like the prehistoric times of computer history; the earth ’ s postwar era, there was quite a widespread rumor that computers would take over the world from man one day. Already today, l...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
The discovery of the Antarctic not only proved one of the most interesting of all geographical adventures, but created what might be called “the heroic age of Antarctic exploration”. By their tremend...
A.are to challenge
B.may be challenged
C.have been challenged
D.are challenging
查看答案
网站内容收集于网络，如有侵犯您的权益，请联系：gl@lm158.com，感谢您的支持
神奇助手题库网