首页
登录
职称英语
Across Africa, the tsetse fly threatens a staggering 55 millions people and thei
Across Africa, the tsetse fly threatens a staggering 55 millions people and thei
游客
2023-10-15
49
管理
问题
Across Africa, the tsetse fly threatens a staggering 55 millions people and their 【M1】______
livestock. The insect sucks blood and in doing so may pass on babies or the dead 【M2】______
parasite that causes trypanosomiasis, sometimes it known as sleeping sickness. 【M3】______
Infected animals suffer of poor growth, weight loss and low milk yield. They 【M4】______
may also become fertile and die. An estimated 5000,000 people are also affected 【M5】______
by the disease each year, and most of them die. Tsetse fly traps are a simple
but effect solution. They are built using blue cloth spread between three poles, 【M6】______
that looks like a cow to the hungry insect, while bottles containing a mixture 【M7】______
of cows’ urine and acetone are placed below. Attracted by the smell, the tsetse
fly settles on the cloth but is unable to get a bite and falls into the trap. One 【M8】______
tsetse fly trap cost only £20 to build but tests have shown that a single trap 【M9】______
will not work. For this reason it’s important that farmers build a number traps 【M10】______
across an area. [br] 【M7】
选项
答案
that一which
解析
(此处主句后面接了一个非限制定语从句,指代前面整个句子,所以应该用关系代词which引导而不是that。)
转载请注明原文地址:https://tihaiku.com/zcyy/3100691.html
相关试题推荐
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"b
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"b
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"b
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"b
Nowadays,peoplearemoreandmoreconcernedaboutthefoodsafetyproblems
Veryfewpeoplecanget【D1】______before11,butMichaelwasan【D2】______.He
Veryfewpeoplecanget【D1】______before11,butMichaelwasan【D2】______.He
Veryfewpeoplecanget【D1】______before11,butMichaelwasan【D2】______.He
Veryfewpeoplecanget【D1】______before11,butMichaelwasan【D2】______.He
Veryfewpeoplecanget【D1】______before11,butMichaelwasan【D2】______.He
随机试题
Whenwetalkabouttheconceptofculture,wefindtherearesomanyonthe
Accordingtothepassage,employmentlettersincludethefollowingformsexcept
Ireallydon’tknowhowyou______theirconstantquarreling.A、patupB、putaway
[audioFiles]audio_eusm_j22_001(20082)[/audioFiles]A、Sciencecourses.B、Mathemat
[originaltext]M:Whatdoyouthinkofthegovernment’snewtaxcutproposal?W:T
Throughthecallsystem,citizensdial3-1-1toreportnon-emergencyproblems.通过
Thewordconservationhasathriftymeaning.Toconserveistosaveandprote
诊断心包积液的最简便、安全、灵敏和可靠的无创性方法是A、PET-CT B、胸
患者,女性,25岁,孕7个月余,今日晨起突发畏寒、发热,测体温39℃,伴乏力、恶
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
最新回复
(
0
)