[题目]Thirty percent of the cattle thin, but the rest fat.A. are; are B. is; isC. is; are D. are; is 题目和参考答案——青夏教育精英家教网—

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【题目】Thirty percent of the cattle __________ thin, but the rest __________ fat.

A. are; are B. is; is

C. is; are D. are; is

【答案】A

【解析】句意：百分之三十的牛很瘦，其余的很胖。Thirty percent修饰集体名词cattle,谓语动词用复数； the rest指代cattle,谓语动词也用复数。

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Dear Hou Ting,

I am sorry that maths disappoint you, but you can’t give it up. As you say, it is one of the most important subject and there is a reason for this.We have to use maths from all the time. Wherever your career takes you, maths will have to be using. In fact , most employers and universities will accept people who have failed or given up maths. All you can do is try your best in maths and make the most use of time you had. If you have trouble understand anything, the first person you should tell is your teacher. That is often surprising how simple things seem when you are explained properly---even maths problems!

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As smartphones and other handheld devices are becoming more affordable, doctors say children who spend long hours playing video games are increasingly showing signs of postural deformities. Physical therapists warn that long-term consequences may be severe.

Owaish Batliwala, 10, from Mumbai, India, admitted spending three to four hours each day playing games on his tablet computer. When he started complaining about a neck pain, his mother Mehzabin became concerned.

“My son got a problem in his neck around June, July. The pain gradually spread to his hand and his back, this was the problem,” she explained. “He plays for hours on the iPad and mobile phone. He plays regularly for at least for two-three hours, that's what caused the problem.”

Physical therapist Sadia Vanjara said the number of young children with chronic pain in upper extremities is on the rise.

“They are not ageing, they haven't had an accident, their age is like, under 10, they are not complaining, the blood reports are fine, their X-rays are fine, their MRI's are fine, then where is the culprit? And that is the very common thing that is happening amongst all children and that is smart phones and the gadgets,” Vanjara said.

There are more smartphone users in India than anywhere else in the world, except for China. Networking technology giant Cisco estimates their numbers will increase from 140 million today to 651 million by the end of the decade.

Vanjara said the best remedies for already-existing pain are daily exercises.

With correct posture, pain can be prevented, so Vanjara also teaches children how to hold their gadgets correctly.

“If you hold the phone up in front of you, your head will not be bent down to look at it and so your neck won’t get strained,” she said.

With the number of smartphones and other handheld devices constantly on the rise, Vanjara predicts we will see not only physical but also psychological and emotional ailments stemming from their excessive use.

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B. Her son’s neck pain has spread to his hand and his back.

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