Trees are useful to man in three very important ways: they pro vide him wood and other products; they give him shade; and they h

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问题 Trees are useful to man in three very important ways: they pro vide him wood and other products; they give him shade; and they help to prevent drought and floods.

选项

答案树对人类的重要性体现在三个方面：提供木材和其他产品；遮阴；有助于防止干旱和洪水。

解析

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成人本科学位英语

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Trees are useful to man in three very important ways: they pro vide him wood and other products; they give him shade; and they h

成人本科学位英语

TheeconomyoftheUnitedStatesafter1952wastheeconomyofawell-fed,almostfullyemployedpeople.Despiteoccasionalalar

Thereareplacesintheworldwherepeoplearealleged(被认为)tolivemuchlongerandremainmorevigorousinoldagethaninmos

Therearevariouswaysinwhichindividualeconomicunitscaninteractwithoneanother.Threebasicwaysmaybedescribedasth

EveryyearintheU.S.,collegesandgraduateschoolscontinuetohighly______trainedpeopletocompeteforjobsthatareno

Jack’sfriendTonyhadrecentlygottenatattoo(纹身),andJackwassoimpressedbyTony’sbraveryandhistattoothathedecided

Thesafetyofshipsatseadoesnotdependonlyonthearrangementsmadeintheshipsthemselves.Dangerouscoastsandrocksmay

TheexperimentconductedinNewcastleUniversityshowsthat——．Accordingtothepassage，earlyhumans——．

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