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【多选题】
家庭具有哪些功能?( )A.
经济功能
B.
情感交流
C.
赡养抚养
D.
社会化
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】From the passage, you can tell that people prefer glass fiber cables to copper cables because ______.
A.
glass fiber is less expensive
B.
glass fiber delivers messages directly
C.
glass fiber is more up to date
D.
glass fiber is easier to make
【单选题】Glass-fiber cables can carry hundreds of telephone conversations ______.
A.
spontaneously
B.
simultaneously
C.
immediately
D.
immiscibly
【单选题】Glass-fiber cables can carry hundreds of telephone conversations ______ .
A.
at length
B.
at the moment
C.
at the same time
D.
at intervals
【简答题】说明发生致癌作用的主要过程,以及加速或减缓这些过程的种因素。说明三种直接或间接证明致癌作用的测试方法。
【单选题】下列能够表示给予某人8折优惠的是()
A.
allow sb. 20% discount
B.
give sb. 80% discount
C.
pay sb. 20% discount
D.
make sb. 80% discount
【单选题】Glass-fiber cables can carry hundreds of telephone conversations simultaneously .
A.
at the same time
B.
without distortion
C.
with safety
D.
in little space
【单选题】________ cables are composed of a glass or plastic inner core surrounded by cladding, all encased in an outside jacket.
A.
Twisted-pair
B.
Coaxial
C.
None of these
D.
Fiber-optic
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