A. enjoy good sleep B. be well-organized

C. bet extra support D. give others help

68.【答案】B

【解析】细节理解题。根据第一行Offer to be your mother’s health friend Promise to be there for any and all doctor’s visits可知，当妈妈去看医生的时候，要陪伴在她身边，故选B。

69.【答案】A

【解析】细节理解题。根据第二则广告中的Help your mother organize all of her medical records, which include the test results and medical information可知，帮助母亲管理好医疗诊断记录，列一张药及喝药时间的清单。故选A。

70.【答案】C

【解析】细节理解题。根据第三则广告中Buy your mother cotton sheets and comfortable pillows to encourage better sleep可知答案为C。

71.【答案】D

【解析】细节理解题。根据Presents for Purpose定位到Gift No. 4，根据最后一句When your mother gets the gift, she will be told that she has helped the chosen charity可知，在Presents for Purpose等公司买礼物，能够做慈善事业帮助他人。故选D。

E

The oldest and most common source(来源) of renewable energy known to man, biomass is one of the most important forms energy production in the United States and elsewhere. Since such a wide variety of biomass materials is everywhere ---- from trees and grasses to agricultural and city ---- life wastes ----biomass promises to play a continuing role in providing power and heat for millions of people around the world.

According to the Union of Concerned Scientists(UCS), biomass is a kind of renewable energy source that produces no carbon dioxide(二氧化碳), because the energy it contains comes from the sun. When plant matter is burned, it gives off the sun’s energy. In this way, biomass serves as a sort of natural battery(电池) for storing the sun’s energy. As long as biomass is produced continuously ----with only as much grown as is used--- the “battery” lasts forever.

According to the Energy Information Administration, biomass has been one of the leading renewable energy sources in the United States for several years running through 2007, making up between 0.5 and 0.9 percent of the nation’s total electricity supply. In 2008----although the numbers aren’t all in yet----wind power probably took over first place because of the rapid development of wind farms across the country.

Producing power from biomass helps reduce some 11 million tons of carbon dioxide each year. Some homeowners also try to make their own heat by using biomass materials. Such practice may save homeowner’s money, but it also produces a lot of pollution. So, the best way is to encourage power plants to use it.

72. Why is biomass considered as “ a sort of natural battery”?

A. It burns merely plant matter. B. It keeps producing electricity.

C. It stores the energy from the sun. D. It produces zero carbon dioxide.

73. We learn from the text that in 2008 ______.

A. Wind power would be the leader of renewable energy. 

B. there was a rapid growth of electricity production

C. biomass might become the main energy source 

D. 0.5~0.9 of power supply came from biomass

74. Why does the author encourage power plants to use biomass?

A. To prevent the waste of energy. B. To increase production safety.

C. To reduce pollution. D. To save money.

75. Where does the text probably come from?

A. A research plan. B. A science magazine

C. A book review. D. A business report.

In my family, there are three people. My father is 

72.【答案】C

【解析】细节理解题。根据第二段话because the energy it contains comes from the sun. When plant matter is burned, it gives off the sun’s energy. In this way, biomass serves as a sort of natural battery(电池) for storing the sun’s energy可知答案为C。

73.【答案】A

【解析】推理判断题。根据第三段话In 2008----although the numbers aren’t all in yet----wind power probably took over first place because of the rapid development of wind farms across the country可知，2008年风能占据首位。

74.【答案】C

【解析】推理判断题。根据最末一段Some homeowners also try to make their own heat by using biomass materials. Such practice may save homeowner’s money, but it also produces a lot of pollution. So, the best way is to encourage power plants to use it可知答案为C。

75.【答案】B

【解析】推理判断题。根据全文内容可知，本文是一篇有关生物量能源的科普类文章，故它应该是源于科学杂志，故选B。

第一节 短文改错

hardworking but goes to work in the field every day. 76. _______