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【单选题】
下列有和发展的描述,错误的是:
A.
成熟是成长与发展的综合结果
B.
发展是机体功能的改变
C.
发展是心理方面的改变
D.
成长可用量化的指标来测量
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【单选题】erous bacteria can contaminate .
A.
organic food only
B.
non-organic food only
C.
organic and non-organic food
【单选题】Experts say that in the average home, the kitchen is the area with most erous bacteria.
A.
The kitchen is the cleanest room in the house.
B.
Kitchens often contain things that can make you sick.
C.
The kitchen is a erous place.
【单选题】设int a=9,b=8,c=7,x=1; 则执行语句 if(a>7)if(b>8)if(c>9)x=2;else x=3; 后,x的值是 。
A.
0
B.
2
C.
1
D.
3
【简答题】How is a blue hole different from a cave? a. A blue hole is always underwater. b. Caves usually have two sinkholes. c. Caves are inland, but blue holes are not. 2. What makes blue holes ...
【单选题】丙型肝炎的主要传播途径是
A.
水传播
B.
粪-口途径
C.
食物传播
D.
血液传播
E.
媒介传播
【单选题】丙型肝炎的主要传播途径是
A.
输血和血制品
B.
其他注射途径
C.
性接触
D.
日常生活接触
E.
母婴垂直传播
【单选题】丙型肝炎的主要传播途径是
A.
粪口传播
B.
水传播
C.
食物传播
D.
血液传播
E.
虫媒传播
【单选题】丙型肝炎的主要传播途径是
A.
粪一口途径
B.
水传播
C.
食物传播
D.
血液传播
E.
媒介传播
【多选题】Reading the following passage and choose the correct answer(s). Six children were very sick in the hospital and Dr. Bessor, an expert on strange illnesses, was called to find the cause of the illness....
A.
method of agreement
B.
method of difference
C.
yzing the correlation
D.
method of presence
【单选题】Synthetic biology provides technical support for reviving and constructing from scratch erous bacteria or viruses such as Ebola, Smallpox and SARS viruses that can kill people in mass easily; this...
A.
biosecurity
B.
biosafety
C.
biorisk
D.
bioproduct
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