手性药物的对映异构体之间可能A．具有等同的药理活性和强度 B．产生相同的药理活性，但
题型：多项选择题
问题：
手性药物的对映异构体之间可能
A．具有等同的药理活性和强度
B．产生相同的药理活性，但强弱不同
C．一个有活性，一个没有活性
D．产生相反的活性
E．产生不同类型的药理活性
题型：多项选择题
阅读下列材料,从各题所给A、B、C、D四个选项中,选出一个最佳答案。
A
56. We can read the above material in ________. [ ]
A. A newspaper
B. a traveling report
C. a textbook
D. a job advertisement
57. You call _____________ if you’re interested in the special trips. [ ]
A. Reader 2007
B. 4, 5&6 day breaks
C. Italian Special Offers
D. 01223 434385
58. You have to pay at least ________ to go to SICILY & MOUNT ETNA. [ ]
A. ￡179
B. ￡189
C. ￡215
D. ￡368
59. We can NOT learn about ________ of the special trips. [ ]
A. the price
B. the food
C. the time
D. the sights
60. The trips are offered by __________. [ ]
A. Reader magazine
B. Cambridge University
C. NEWMARKET PROMOTIONS
D. INDIVIDUAL BROCHURES
B
Chuck Wall teaches management and human relations at Bakersfield College. He walked into class one day and told his students that their homework was to perform one act of random(任意的) kindness. His students did not understand the homework and didn’t know what to do, but the professor would not answer their questions. He encouraged his students to work it out for themselves.
One week later, the students entered the classroom excited to share their stories. One student told of giving away blankets to the homeless. Another reported on helping a dog to find its owner, and another student had been trying to find a long, lost friend. Students were energized (给予活力) by the homework assignment and wanted other people to be kind too. With the support of local businesses, the students made stickers to put on cars that invited people to do something kind for others. They sold the stickers and decided to donate the money to a center for the blind---not surprising as Professor Wall is blind.
Since then, similar kindness activities have been started in schools around the world. Many schools organize a Random Acts of Kindness Week, around November 13th, to celebrate World Kindness Day. Some schools use each day of Random Acts of Kindness Week to perform a different kind act, such as making a new friend, helping someone, doing community service, or raising money for a charity. Students learn to consider other people and thank about how small actions can make the world a better place.
61. The professor’s homework was to ask his students _________. [ ]
A. to write about kindness.
B. to be kind to strangers
C. to spend time helping other
D. to go out to raise money
62. We learn from the passage that ________.[ ]
A. Chuck’s students are not clever enough
B. the students didn’t do Chuck’s homework
C. Chuck Wall is an unusual teacher
D. no students enjoyed Chuck’s homework
63. It is certain that _________. [ ]
A. the students got good grades in Chuck’s class
B. kindness activities are not widely accepted
C. Chuck Wall was not good at designing homework
D. the students only helped people they knew
64. In kindness activities students learn _________. [ ]
A. to deal with difficult things
B. to do great things every day
C. to know about the world
D. to consider other people
65. Which is the best title of the passage? [ ]
A. Learning Kind Things
B. Teaching Kindness
C. World Kindness Day
D. Bakersfield College