首页
登录
职称英语
A summary of the physical and chemical nature of life must begin,not on th
A summary of the physical and chemical nature of life must begin,not on th
游客
2025-01-02
18
管理
问题
A summary of the physical and chemical nature of life must begin,
not on the Earth, but in the Sun, in fact, at the Sun’s very center. It is here
which is to be found the source of the energy that the Sun constantly pours 【M1】______
out into space light and heat. This energy is librated at the center of 【M2】______
the Sun as billions upon billions of nuclei of hydrogen atoms collide
with each other and fuse together to form nuclei of helium, and doing 【M3】______
so, relieve some of the energy that is stored in the nuclei of atoms. 【M4】______
The output of light and heat of the Sun requires that some 600 million
tons of hydrogen are converted into helium in the Sun every second. 【M5】______
This the Sun has been doing for several thousands of millions of year.
The nuclear energy is released at the Sun’s center as high-energy
gamma radiation, a form of electromagnetic radiation like light and
radio waves, only of very much short wavelength. This gamma radiation 【M6】______
is absorbed by atoms inside the Sun to be reemitted at slight longer 【M7】______
wavelengths. This radiation, in its turn is absorbed and reemitted. As the
energy filters through the layers of the solar interior, it passes through
the X-ray part of the spectrum eventually becoming light. At this stage,
it has reached that we call the solar surface, and can escape into space 【M8】______
without being absorbed further by solar atoms. A very small fraction of
the Sun’s light and heat are emitted in such directions that after 【M9】______
passing unhindering through interplanetary space, it hits the Earth. 【M10】______ [br] 【M5】
选项
答案
are改成be
解析
句法错误,虚拟语气问题。主句的谓语动词是require,后面的宾语从句中使用should + v. 表示虚拟语气。
转载请注明原文地址:https://tihaiku.com/zcyy/3895227.html
相关试题推荐
WhichofthefollowingisNOTwrittenbyEdgarAllaPoe?A、NatureB、ToHelenC、Th
Itseemsthatphysicalactivitiesinevitably______,whichimprovesfitness.[or
Anyphysicaltheoryisalwaysprovisional,inthesensethatitisonlyahyp
Anyphysicaltheoryisalwaysprovisional,inthesensethatitisonlyahyp
Anyphysicaltheoryisalwaysprovisional,inthesensethatitisonlyahyp
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
随机试题
Arabiclanguageisoneoftheworld’smostwidelyusedlanguages.Itisthe
WhenwechooseItalyasourholidaydestination,decidetobuyaGermancar,
[originaltext] Eachyear,morethantwomillionweddingstakeplaceintheUni
如果某项工作拖延的时间超过其自由时差但没有超过其总时差,则()。A.会影响
门脉高压的特异性表现是A.脾大 B.脾功能亢进 C.侧支循环开放 D.腹腔
有孩子下课找你,说自己上课举手回答问题,你从来没喊过他,你会怎么做?
某业主4年前在某小区购买了一套商品房。但一直没有居住,一天,该业主接到物业管理公
试述皮亚杰的认知发展理论及其对教学工作的启示。
下列不属于国家财政政策的是()。A:国家预算 B:国债 C:财政补贴 D:
能够输送汞、铅等有毒重金属,也可输送液态钠、钾及熔融的有色金属的泵是()。
最新回复
(
0
)