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【简答题】
下列对一些事实的解释中， 选项 事实 解释 A 食盐是咸的，白糖是甜的 不同物质的分子性质不同 B 1滴水中大约有1.67×10 21 个水分子 水分子质量、体积都很小 C 将墨汁滴入一杯清水中，清水很快变黑 分子在不断运动 D 25m 3 的氧气可以装入0.024m 3 的钢瓶中 氧分子的体积变小 不合理的是（ ） A．A B．B C．C D．D
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【单选题】Tips 1. Save little and often. 2. Keep a sending and saving diary. 3. Save towards a special goal. . ( )14. The above tips are about how to ______.
A.
protect the environment
B.
team up with others
C.
keep a diary
D.
save money
【单选题】This is an alarming realization as natural resources and the environment are being degraded and ______ at a record pace.
A.
wasted
B.
reconstructed
C.
destructed
D.
reversed
【简答题】听录音，选择所听到的内容。 （ ）1. A. mean （ ）2. A. young （ ）3. A. No. 29 （ ）4. A. warm and sunny B. meet B. younger B. No. 19 B. cloudy and rainy C. mask C. old C. No. 9 C. rainy and snowy D. team D...
【简答题】Individualistic cultures value traits associated with ________. A. cooperation B. independence C. social harmony D. interdependence 2. A collectivist culture tends to value characteristics and behavio...
【简答题】When there is too much smoke in the room, the devise would automatically turn on the alarming system.( )
【简答题】听对话选择最佳答案。 ( ) 1. A. To the library. ( ) 2. A. Volleyball. ( ) 3. A. Hot dogs and pop. ( ) 4. A. The blue team. ( ) 5. A. Playing football. B. To the gym. B. Basketball. B. Donuts ...
【简答题】The population ________ (increase) at an alarming speed for the past 20 years.
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