When I was a child, I once went on campi

题型:改错题

问题:

When I was a child, I once went on camping with my family in summer. We decided to make a barbecue in a valley where lay in a beautiful mountain. So we collected some tree sticks to make the fire. My father ask me if I could try to make a fire. I was happier to take the job. Then I tried to set fire to the wood with a match, and produced only smoke. Then my father said, “That’s the right way. I’ll show you how to do it. First use the small piece of wood because they catch fire easy. Then put the larger ones on the top of them.” My father helped him make a big fire.

考点:序数词
题型:改错题

我国铁路干线大致分为“五纵三横”,南北向铁路线自东向西排列中最西的是       线。

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地面灌水技术质量评价指标不包括()

A.田间灌溉水有效利用率

B.田间灌溉水储存率

C.田间灌溉水均匀度

D.田间水利用系数

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关于心包的描述,哪项是正确的?()

A.前壁直接与第4~6肋软骨前部及胸骨下半相邻

B.与膈中心键之间有一疏松结缔组织间隙

C.后壁与左心房后壁之间为心包横窦

D.后壁与食管、胸主动脉毗邻

E.纤维心包和浆膜心包之间为心包腔

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镰状红细胞贫血患者,其血红蛋白β链N端第六个氨基酸残基谷氨酸被下列哪种氨基酸代替()

A.缬氨酸

B.丙氨酸

C.丝氨酸

D.酪氨酸

E.色氨酸

题型:改错题

DNS服务器支持正向查询和反向查询,正向查询和反向查询的工作过程是什么?

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