Most children often hear their parents say "sit up straight!" Parents often say this at the table. But these days, parents often say it when their children are playing computer games.

Ten-year old James, from India, says he spends three to four hours each day playing games on his computer. His mother became worried when her son started saying that his neck hurt.

She said, "My son started having neck problems around June or July. It goes to his hand and back. He plays for hours on the iPad and smartphone. This is the problem."

This is a problem in many countries of the world. But there are more smartphone users in India than anywhere else in the world, except China. There are 140 million smartphone users in India today, but it will be 651 million by 2020.

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1.What do parents often say when children are at the table?

A Stand up.

B Sit down.

C Sit up straight.

D Hurry up.

解析：选C。C 细节理解题。根据第1段第1句their parents say "sit up straight!" Parents often say this at the table.可知，故选C。

2.Where is James from?

A He is from China.

B He is from America.

C He is from India.

D He is from Canada.

解析：选C。C 细节理解题。根据第2段第1句Ten-year old James, from India,…可知，故选C。

3.How long does James play games each day?

A One to two hours.

B Two to three hours.

C Three to four hours.

D Four to five hours.

解析：选C。C 细节理解题。根据第2段第1句…he spends three to four hours each day playing games可知，故选C。

4.“This is the problem” in paragraph 3 refers to_________.

A James’ neck hurts.

B James’ hand and back.

C James didn’t sit up straight.

D James plays for hours on the iPad and smartphone.

解析：选D。D 内容理解题。根据He plays for hours on the iPad and smartphone.及最后1段内容可知，故选D。

5.Which country has the most（最多的）smartphone users?

A India.

B China.

C America.

D Japan.

解析：选B。B 判断推理。根据最后1段第2句except China.（除了中国）可知中国拥有最多的智能手机使用者，故选B。