The underlined expression cutting edge in Paragraph 3 is closest in meaning to ______.

Which of the following is the best title of this passage?

• A.The Advantages of Online Exams
• B.The High-tech Methods in Online Courses
• C.The Fight against Cheating in Online Education
• D.The War against the Booming of Online Education

阅读下列应用文及相关信息，并按照要求匹配信息，请在答题卡上将对应题号的乡音选项字母涂黑。

首先请阅读下列杂志上的广告内容：

Some programs can find out possible cheaters by _____.

• A.checking the question answering speed
• B.produucing a large number of question
• C.scanning the Internet test question
• D.giving difficult test question

For internet universities, exams and diplomas will be valid if _____.

• A.they can attract potential students
• B.they can defeat academic cheating
• C.they offer students online help
• D.they offer many online courses

What made David change?

• A．His teacher’s help.
• B．The author’s friendship.
• C．His exchange of letters with the author.
• D．The author’s silent communication with him.
• A.He recovered after months of treatment.
• B.He liked biking before he lost his family.
• C.He went into university soon after starting to talk.
• D.He got friends in school before he met the author.

根据材料请回答下列各

While Jennifer was at hose taking an online exam for her business law class, a monitor（监控器）a few hundred miles away was watching her every move.

Using a web camera equipped in Jennifer’s Los Angeles apartment , the monitor in Phoenix tracked how frequently her eyes moved form the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked — remotely — to prevent Internet searches , and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down?

In the battle against cheating , this is the cutting edge and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid — that students haven’t just searched the Internet to get the right answers.

• Although online classes have existed for more than a decade ，the concern over cheating has become sharper in the last year with the growth of "open online courses." Private colleges，public universities and corporations are jumping into the online edu
• Aside from the web camers, a number of other hight-tich methods are becoming increasingly popular Among them are programs that check students’ identities using personal information,such as the telephone number they once used.    O
• A.To correct her typing mistakes.
• B.To find her secrets in the room.
• C.Cto prevent her form. slowing down.
• D.To keep her from dishonest behaciors.

The underlined expression cutting edge in Paragraph 3 is closest in meaning to ______.

• A.advanced teachique
• B.sharpening tool
• C.effective rule
• D.dividing line

What can be inferred about David?

• A.He recovered after months of treatment.
• B.He liked biking before he lost his family.
• C.He went into university soon after starting to talk.
• D.He got friends in school before he met the author.