[问答题] 请指出下列代号的含义:OK、RQ、NS、SA。
[问答题] 简述SA方法的缺点。
[问答题] 简述SA方法的优点。
[单选题]The main idea of this passage is that satellites aye now used in______.A.taking pictures of the atmosphereB.receiving pictures of the atmosphereC.doing other work in many waysD.weather forecasting
[试题]Strengthening economic growth, at the same time as winter grips the northern hemisphere, could push the price higher still in the short term.
[单选题]Ourhopes___________andfellinthesameinstant.A)aroseB)raisedC)roseD)aroused