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【简答题】
He usually ___ (go) to school on foot. 2.Everyone ___ (be) here now. 3.We ___(water) the flowers yesterday. 4.My father__(buy) a new car tomorrow. 5.Look out! The car is ___ (come). 6.The patient is _(die).No one can save him. 7.Stone __ (be) a hard material. 8.Hurry up, or we ___ (be) late. 9.May I ___ (speak) to Mr. Black, please. 10.Everyone ___(pass) the exam. 11. I ___ (work) in the factory since last year. 12.Christmas ____ (come) before the New Year. 13.What ___ (happen) yesterday? 14.Did you ___ (see) Sally at the party last night? 15. Mark ___ (write) a paper these days. 16. Hurry up, Lucy and Lily. Dad ___ (wait) for you. 17. Kate, go and open the door. Someone ____ (knock) at the door 18.It ___ (rain) outside. Just stay in and do some reading
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反馈参考答案：
举一反三
【简答题】根据测距的原理,可将GPS定位的方法分为()、()和()三种。
【单选题】From 1733 to 1758, Benjamin Franklin wrote and published his famous ______, an annual collection of proverbs.
A.
The Autobiography
B.
Poor Richard’s Almanac
C.
Common Sense
D.
The General Magazine
【简答题】根据测距的原理，可将GPS定位的方法分为（）、载波相位测量定位和（）三种。
【多选题】旧色谱柱柱效低分离不好时,可采用的方法是( )。
A.
用强溶剂冲洗
B.
刮除被污染的床层,用同型的填料填补柱效可部分恢复
C.
污染严重,则废弃或重新填装
D.
使用合适的流动相或使用流动相溶解样品
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