单项选择题

Questions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20.
Which of the following is INCORRECT

A．All the satellite TV programs can be received for free.
B．There are many TV stations now.
C．There were fewer stations in the 1940s.
D．When an American named Philo Farnsworth built the first working television receiver, he was only 21 years old.

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Frank Greer, a pediatrician at the University of Wisconsin in Madison, said the ideal way to achieve the goal of healthy bones is to make sure children exercise and consume up to ______ milligrams a day of calcium.

单项选择题

Why is she active against censorship of children’s book

A．Because she thinks it’s absurd.
B．Because she thinks parents only want to satisfy their needs to control the children.
C．Because her books suffer from censorship.
D．Because most of her books are challenged by parents.

Questions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20. Which of the following is INCORRECT 您的浏览器不支持 audio 元素。

Questions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20.
Which of the following is INCORRECT