Fill in the blanks with words or phrases from the box below. Change the form where necessary.explore; specimen; species; assume; giant; observe; elusive; landmark; vital; impact; alien; array; overlook; gear; hostile; on the heels of; from the beginning; as yet; for the first time; learn about; feed on; fit together; fit intoA set of _______ are installed to control the speed and direction of the vehicle.
查看答案
Replace the underlined part in each of the following sentences with a word or phrase from the box below. Write your answer in the brackets. Make changes or additions where necessary.completion; expertise; overlook; die of; as yet; elusive; for the benefit of; imperative; provide for; in one’s entirety
Why does the writer say ocean exploration is an imperative? Give at least three reasons from the text.
What are the difficulties of ocean exploration? (Name at least two)
建筑物场地平整是指场地平均厚度在( )cm以内的挖、填、运、找平。
A. ±30
B. ±40
C. ±50
D. ±60