Some well-known scientists believe that there is not enough oxygen on Mars to ______ human life.

admin2015-03-26 56

问题 Some well-known scientists believe that there is not enough oxygen on Mars to ______ human life.

选项 A、remain
B、sustain
C、retain
D、last

答案B

解析动词词义辨析题。remain表示“保持，逗留，剩余，残存”；sustain表示“支撑，维持”；retain表示“保持，保留”；last表示“持续”。氧气是维持人类生存用的，B正确。

转载请注明原文地址:https://kaotiyun.com/show/QkHK777K

专业英语四级

相关试题推荐

Instudyafterstudy,fourtraitsare【C1】______ofhappypeople.First,happypeople,especiallyin【C2】______Westerncultures,li
Instudyafterstudy,fourtraitsare【C1】______ofhappypeople.First,happypeople,especiallyin【C2】______Westerncultures,li
Instudyafterstudy,fourtraitsare【C1】______ofhappypeople.First,happypeople,especiallyin【C2】______Westerncultures,li
Thetreatmentwillcontinueuntilthepatientreachesthepoint______hecanwalkcorrectlyandsafely.
—DoesAlanlikehamburgers?—Yes.Somuch______thatheeatsthemalmosteveryday.
—Doyoulikeorangejuice?—Yes.Somuch______thatIdrinkitalmosteverydayinsummer.
Manyanelderlyman______willingtocontinueworkingafterretirementsothattimecanbeeasilykilled.
Teachersshoulddoalltheycanto______ontheirstudentstodobetterratherthancriticizethemallthetime.
Ourcompany______hardwarebutnotsoftware.
Thereoughttobelessanxietyovertheperceivedriskofgettingcancerthan______inthepublicmindtoday.

随机试题

下列矿物质营养素哪项在我国居民膳食中缺乏较常见
患者，男，23岁，近3月来出现颈部、腋下淋巴结肿大，伴顽固性腹泻，每日10数次稀便，体重明显下降达10kg，3年前在国外居住期间，因手术而输血400ml，术后无特殊，最可能的诊断是
关于乳腺癌，恰当的是
厂区主干道是指汽车通行的道路，是保证()的主要通道。
客户选择缴费方式时，理财规划师不应该推荐的是()。
关于内部审计活动，下列表述正确的有()。
A县某酒厂酿造的“仙液”系列白酒深为当地人喜爱，A县政府办公室发文指定该酒为“接待用酒”，要求各机关、企事业单位、社会团体在业务用餐时，饮酒应以“仙液”系列为主，同时，酒厂公开承诺用餐者凭市内各酒楼出具的证明，可以取得消费100元返还10元的奖励。关于此事
某密码由4位不同数字组成，已知各位密码之和为偶数，则密码有多少种?
下列叙述中正确的是______。
Inmyneighborhoodintheearly1980s,wespentthesummerplayingkickball.Ourfrontlawnswereaconstant.Wetooktheirsoft

最新回复(0)

Some well-known scientists believe that there is not enough oxygen on Mars to ______ human life.

专业英语四级

Instudyafterstudy,fourtraitsare【C1】ofhappypeople.First,happypeople,especiallyin【C2】Westerncultures,li

Instudyafterstudy,fourtraitsare【C1】ofhappypeople.First,happypeople,especiallyin【C2】Westerncultures,li

Instudyafterstudy,fourtraitsare【C1】ofhappypeople.First,happypeople,especiallyin【C2】Westerncultures,li

Thetreatmentwillcontinueuntilthepatientreachesthepoint______hecanwalkcorrectlyandsafely.

—DoesAlanlikehamburgers?—Yes.Somuch______thatheeatsthemalmosteveryday.

—Doyoulikeorangejuice?—Yes.Somuch______thatIdrinkitalmosteverydayinsummer.

Manyanelderlyman______willingtocontinueworkingafterretirementsothattimecanbeeasilykilled.

Teachersshoulddoalltheycanto______ontheirstudentstodobetterratherthancriticizethemallthetime.

Ourcompany______hardwarebutnotsoftware.

Thereoughttobelessanxietyovertheperceivedriskofgettingcancerthan______inthepublicmindtoday.

下列矿物质营养素哪项在我国居民膳食中缺乏较常见

患者，男，23岁，近3月来出现颈部、腋下淋巴结肿大，伴顽固性腹泻，每日10数次稀便，体重明显下降达10kg，3年前在国外居住期间，因手术而输血400ml，术后无特殊，最可能的诊断是

关于乳腺癌，恰当的是

厂区主干道是指汽车通行的道路，是保证()的主要通道。

客户选择缴费方式时，理财规划师不应该推荐的是()。

关于内部审计活动，下列表述正确的有()。

某密码由4位不同数字组成，已知各位密码之和为偶数，则密码有多少种?

下列叙述中正确的是______。

Inmyneighborhoodintheearly1980s,wespentthesummerplayingkickball.Ourfrontlawnswereaconstant.Wetooktheirsoft

Some well-known scientists believe that there is not enough oxygen on Mars to ______ human life.

专业英语四级

Instudyafterstudy,fourtraitsare【C1】______ofhappypeople.First,happypeople,especiallyin【C2】______Westerncultures,li

Instudyafterstudy,fourtraitsare【C1】______ofhappypeople.First,happypeople,especiallyin【C2】______Westerncultures,li

Instudyafterstudy,fourtraitsare【C1】______ofhappypeople.First,happypeople,especiallyin【C2】______Westerncultures,li

Thetreatmentwillcontinueuntilthepatientreachesthepoint______hecanwalkcorrectlyandsafely.

—DoesAlanlikehamburgers?—Yes.Somuch______thatheeatsthemalmosteveryday.

—Doyoulikeorangejuice?—Yes.Somuch______thatIdrinkitalmosteverydayinsummer.

Manyanelderlyman______willingtocontinueworkingafterretirementsothattimecanbeeasilykilled.

Teachersshoulddoalltheycanto______ontheirstudentstodobetterratherthancriticizethemallthetime.

Ourcompany______hardwarebutnotsoftware.

Thereoughttobelessanxietyovertheperceivedriskofgettingcancerthan______inthepublicmindtoday.

下列矿物质营养素哪项在我国居民膳食中缺乏较常见

患者，男，23岁，近3月来出现颈部、腋下淋巴结肿大，伴顽固性腹泻，每日10数次稀便，体重明显下降达10kg，3年前在国外居住期间，因手术而输血400ml，术后无特殊，最可能的诊断是

关于乳腺癌，恰当的是

厂区主干道是指汽车通行的道路，是保证()的主要通道。

客户选择缴费方式时，理财规划师不应该推荐的是()。

关于内部审计活动，下列表述正确的有()。

某密码由4位不同数字组成，已知各位密码之和为偶数，则密码有多少种?

下列叙述中正确的是______。

Inmyneighborhoodintheearly1980s,wespentthesummerplayingkickball.Ourfrontlawnswereaconstant.Wetooktheirsoft

Instudyafterstudy,fourtraitsare【C1】ofhappypeople.First,happypeople,especiallyin【C2】Westerncultures,li

Instudyafterstudy,fourtraitsare【C1】ofhappypeople.First,happypeople,especiallyin【C2】Westerncultures,li

Instudyafterstudy,fourtraitsare【C1】ofhappypeople.First,happypeople,especiallyin【C2】Westerncultures,li