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【单选题】
Which of these is NOT mentioned as a worry of some scientists?（Text 3B)A.
Genetically engineered crops are being developed too quickly.
B.
Something could go wrong when moving genes across dramatically different species.
C.
Genetically engineered crops are being released before they’ve been adequately tested.
D.
Genetically engineered species will pollute water and harm animals.
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举一反三
【单选题】In which of the flollowing groups is the discovery of new species not mentioned in the passage?
A.
Birds
B.
Monkeys
C.
Trees.
D.
Freshwater fish.
【多选题】In most cases, the aim of genetic engineering is to introduce a new trait to the plant which does not occur naturally in the species, which include:
A.
resistance to certain pests, diseases, or environmental conditions
B.
reduction of spoilage
C.
resistance to chemical treatments (e.g. resistance to a herbicide)
D.
improving the nutrient profile of the crop
【单选题】把家庭作为社区护理的基本单位的最主要原因是
A.
每一个家庭成员是独立的个体
B.
每一家庭成员的健康问题具有个别性
C.
容易制定社区护理的目标
D.
家庭是提高社区健康水平的基础
【单选题】Among the following species, which one was introduced to Japan in the Tang Dynasty?
A.
Tangerine.
B.
Watermelon.
C.
Walnut.
D.
Tomato.
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