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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Natural Medicines Since earliest days, humans have used some kinds of medicines. We know this because humans have survived. Ancient treatments for injury and disease were successful enough to keep hum...
A.
Plants.
B.
Factory-produced chemicals.
C.
Modern medicines.
D.
Strange and wonderful equipment.
【单选题】回答题： Natural Medicines Since earliest days， humans have used some kinds of medicines. We know this because humans have survived. Ancient treatments for injury and disease were successful enough to kee...
A.
much more successful than modem ones
B.
successful enough for humans to survive
C.
successful in all cases
D.
of little help to humans
【单选题】第三篇 Natural Medicines Since earliest days, humans have used some kinds of medicines. We know this because humans have survived. Ancient treatments for injury and disease were successful...
A.
Strange and wonderful equipment.
B.
Factory-produced chemicals.
C.
Modern medicines.
D.
Plants.
【单选题】Natural Medicines Since earliest days, humans have used some kinds of medicines. We know this because humans have survived. Ancient treatments for injury and disease were successful enough to keep hum...
A.
may never be exhausted
B.
is surprisingly big
C.
may be dropping rapidly
D.
is as rich as ever
【单选题】共用题干 第二篇Excessive Demands on Young PeopleBeing able to multitask is hailed by most people as a welcome skill,but not according to a recent study which claims that young people between the ages of eigh...
A.
They feel they are more efficient than others.
B.
They waste more time than they should spend.
C.
They put more energy on important tasks.
D.
They need to improve their analytical skills.
【单选题】Most economists in the United States seem excited by the spell of the free market. Consequently, nothing seems good or normal that does not accord with the requirements of the free market. A price tha...
A.
predicting the consequences of a practice.
B.
criticizing a point of view.
C.
calling attention to recent discoveries.
D.
Summarizing conflicting opinions.
【单选题】Natural Medicines Since earliest days, humans have used some kinds of medicines. We know this because humans have survived. Ancient treatments for injury and disease were successful enough to keep hum...
A.
Many big and modern hospitals are expensive.
B.
Modern medicines are now available all over the world.
C.
Traditional medicines are neither mysterious nor magical.
D.
Humans have used some kinds of medicines since earliest days.