首页
登录
职称英语
Until the very latest moment of his existence, man has beenBound to the pla
Until the very latest moment of his existence, man has beenBound to the pla
游客
2024-06-11
8
管理
问题
Until the very latest moment of his existence, man has been
Bound to the planet on which he originated and developed.
Now he had the capability to leave that planet and move 【S1】______
out into the universe to those worlds which he has known
previously only directly. Men have exploited parts of the moon, 【S2】______
put spaceships in orbit around another planet and possibly within
the decade will land into another planet and explore it. Can we be 【S3】______
too bold as to suggest that we may be able to colonize other 【S4】______
planet within the no-too-distant future? Some have advocated 【S5】______
such a procedure as a solution to the population problem: ship the
excess people off to the moon. But we must keep in head the 【S6】______
billions of dollars we might spend in carrying out the project. To
maintain the earth’t population at its present level, we could have
to blast off into space 7,500 people every hour of every day of the
year.
Why are we spending so little money on space 【S7】______
exploration? Consider the great need for improving many aspects 【S8】______
of the global environment, one is surely justified in his
concern for the money and resources that they are poured into 【S9】______
the space exploration efforts. But perhaps we should look at
both side of the coin before arriving hasty conclusions. 【S10】______ [br] 【S1】
选项
答案
本文用的是一般现在时,故had应为has。
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3629007.html
相关试题推荐
Untiltheverylatestmomentofhisexistence,manhasbeenBoundtothepla
Untiltheverylatestmomentofhisexistence,manhasbeenBoundtothepla
Untiltheverylatestmomentofhisexistence,manhasbeenBoundtothepla
CrabisprizedinChinayearround—it’sadishwith"specialmoment"written
CrabisprizedinChinayearround—it’sadishwith"specialmoment"written
CrabisprizedinChinayearround—it’sadishwith"specialmoment"written
CrabisprizedinChinayearround—it’sadishwith"specialmoment"written
Thejobinterviewisthemomentoftruthinjobhunting.Inadditiontohow
Thejobinterviewisthemomentoftruthinjobhunting.Inadditiontohow
Thejobinterviewisthemomentoftruthinjobhunting.Inadditiontohow
随机试题
Advertisingisdifferentfromotherformsofcommunication______theadvertiser
[originaltext]Thevastoceansoftheworldaredark,deepandmysteriousplaces
[originaltext]Indiansaretheworld’sbiggestbookworms,readingonaverage
HowPovertyChangestheBrainA)Yousawthepicturesinscien
钢结构工程施工中采用的工程技术文件,承包合同文件对施工质量验收的要求不可高于规范
龋病也可称为牙体硬组织的() A.病毒感染性疾病 B.变态反应性
高钾血症,肾动脉狭窄,均不宜应用的降血压药物是A.可乐定 B.哌唑嗪 C.利
证券市场是指股票、债券、投资基金等()。A:有价证券交易的市场B:有价证券发行
课外活动制定计划的基本要求是课外活动必须具有()。 A.可行性B.协调性
医学伦理学理论正确性的唯一标准是A:理论全面 B:理论系统 C:理论深刻
最新回复
(
0
)