—Where’s her second son? I haven’t seen

题型:选择题

问题:

—Where’s her second son? I haven’t seen him for a long time.

—He _______ Maine looking for a place to work.

A.will go to

B.has gone to

C.had gone to

D.goes to

考点:过去进行时一般现在时过去完成进行时
题型:选择题

阅读下面短文,把A---D四个句子填入文中空缺处,使短文内容完整、正确。

I’m Lin Tao. I live in a beautiful apartment. ____小题1:____ There are eight floors in the building and there is a parking lot near it. We park our cars there.

Our apartment is in the countrysides. ____小题2:____ It’s four kilometers from the center of the city. My father works in the city, and he goes to work by car every day.

____小题3:____ One is for my parents. One is me and another for my

brother. We don’t have a garden, but there is a small balcony(阳台). ____小题4:____ I often water the flowers with my brother. Our apartment

is small but we are very happy in it. I love my home.

小题5:What is the best title (标题)for the passage?

A. My family      B. My home       C.  My father

题型:选择题
下列说法中正确的是(  )

A.我们观察到的太阳光谱是明线光谱

B.红光和紫光从水中射向空气时,紫光发生全反射的临界角比红光的大

C.紫外线比红外线的频率高,所以紫外线的热效应比红外线的热效应更显著

D.单个原子跃迁发光的过程中,发出紫光的原子比发出红光的原子能量变化大

题型:选择题

导致“口腔生殖器综合征”是因为( )缺乏。

A.维生素B1
B.维生素B2
C.维生素B6
D.维生素B12

题型:选择题

实施整体变更控制过程包括下列所有变更管理的活动,除了()

A.迅速地审查、分析和批准变更的请求。必须迅速,因为延误决策时机可能给时间、成本或变更的可行性带来不利影响

B.监控资源平衡中的变更,以确保在整个项目生命周期中的资源有效使用

C.仅允许经批准变更纳入项目管理计划和项目文件中,以维护基准的严肃性

D.协调整个项目中的各种变更(如建议的进度变更往往也会影响成本、风险、质量和人员配备)

题型:选择题

设城市污水一级出水BOD5=200mg/L,曝气池设计流量为400m3/h(9600m3/d),要求二级出水BOD5=20mg/L,则处理效率为()。

A.70%

B.90%

C.80%

D.95%

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