Directions: Each of the following sentences has four underlined parts marked A, B, C and D. Identify the one that is not correct. Then blacken the corresponding letter on the Answer Sheet.

　　46.Many parents feel they need to keep a closer eye to their children because of concerns about crime and school violence.

　　A B C D

　　47.For married mothers, the time spend on child care increased to an average of 12.9 hours a week in 2009

　　A B C D

　　48.There is an increasingly amount of evidence that more and more young people are taking an active interest in politics.

　　A B C D

　　49. When you've finished with that book， don't forget to put it back on the shelf，Won't you?

　　A B C D

　　50. The workers in the factory demanded that their pay would be raised by 20 percent

　　A B C D

　　51. It remains to see whether Jim will be fit enough to play in the finals.

　　A B C D

　　52 I invited Joe and Linda as well as Tom to dinner, but neither of them Came.

　　A B C D

　　53.Over the past 20 years，the Internet bas helped change our world in either Way or another for the better.

　　A B C D

　　54.How and why this language has survived for more than a thousand years，while spoke by very few，is hard to explain.

　　A B C D

　　55. Nearly half of Americans aged 26 and old take part in some form of continuing education.

　　A B C D