C．She always feels sleepy.

　　D．She is always hungry.

　　解析：推理判断题。根据第一段However，from time to time I get light­headed and shaky，and desperately need food可推断，答案为B项。

　　答案：B

　　2．From the passage we can infer that hormones______.

　　A．change sharply sometimes

　　B．remain the same after meals

　　C．are important in balancing blood sugar

　　D．help supply nutrients to the body

　　解析：推理判断题。根据第三段Hormones in the body keep your blood sugar from rising too high or dropping too low...可推断，答案为C项。

　　答案：C

　　B

　　Rocket planes and spaceships to carry passengers beyond the atmosphere are being built and tested，with commercial space flight service targeted to begin in 2017 or 2017.

　　“Based on market studies，we expect to see this type of activity result in a $1 billion industry within the next 10 years，”said George Nield，associate administrator for the Federal Aviation Administration’s Office of Commercial Space Transportation，in the hearing(听证会)，which was carried via webcast(网络广播)．

　　“This is a new and growing industry.If you look at the last 25 years，you can find almost all the launches were for the same basic purpose—to launch satellites，such as a telecommunications satellite，to orbits—and that level of business for that part of the industry is continuing today.But there are several new purposes that we see just on_the_horizon，”Nield said.

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