Scientists have discovered many planets orbiting distant stars, all are _____ to life.
A.unlikely
B.unfriendly
C.forbidden
D.vulnerable
A.unlikely
B.unfriendly
C.forbidden
D.vulnerable
第1题
Even talented scientists have no way to precisely forecast the future. (英译汉)
第2题
The scientists have made an______study of the viruses that cause the disease.
A.exhausted
B.exhausting
C.exhaustive
D.exhaustion
第3题
第4题
Scientists have done countless experiments to show that praise is far ______ (effective) than criticism in improving human behavior.
第5题
The article does not mention whether the scientists' experiments with dogs have ______.
A.benefited animals other than dogs
B.served man
C.helped other dogs
D.contributed to medical knowledge
第6题
第7题
Scientists will have to___new approaches of increasing the world’s power supply.
A.put up with
B.catch up with
C.stand up for
D.come up with
第9题
A.stick to
B.come up with
C.carry out
D.lead to
第10题
A.lead to
B.come up with
C.carry out
D.stick to
第11题
A.Since the beginning
B.have become
C.in
D.the way how