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【单选题】
下列有关 混凝土的叙述错误的是( )。A.
轻骨料混凝土。小于 1950Kg / m3是一种轻质、、多功能的新型土木工程 材料。
B.
纤维增强混凝土是将韧性及抗拉强度较高的短纤维均匀分布于水泥混凝土中。
C.
碾压混凝土是水泥和水的用量较普通混凝土少同时掺加工业废渣，是道路或机场工程的路面或路面基层材料。
D.
普通混凝土是由水泥、钢筋、粗骨料（碎石或卵石）、细骨料（砂）和水拌和经硬化而成的一种人造石材。
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【单选题】Which of the following statement is not true according to the passage?
A.
We should pity such unhappy people.
B.
Such unhappy people are Critical about everything.
C.
If such unhappy people recognize the bad effects of the habit on themselves they may get rid of it.
D.
Such unhappy people are also not content with themselves.
【单选题】Reading comprehension Understanding the text Choose the best answer to each of the following questions. 1 Why was the author feeling bold that day?
A.
The boy she'd like to date smiled and said good morning to her.
B.
She was very anxious to greet him.
C.
She can't wait to hear his voice.
D.
She has been waiting for too long to talk to him.
【简答题】We should also remember to praise_______
【单选题】We can conclude from the passage that ______.
A.
we should pity all such unhappy people
B.
such unhappy people are dangerous to social life
C.
people can get rid of the habit of unhappiness
D.
unhappy people can not understand happy persons
【单选题】John's mother used to be very _____ about what she wore，although her family was not that rich.
A.
curious
B.
special
C.
particular
D.
anxious
【单选题】在 激烈 的 竞争 环境 中, 处在 同一 行业 的 企业 纷纷 通过 市场 营销 争取 某 产品 的 最大 市场 份额, 这种 情形 标志着 该 产品 已 进入 生命 周期 的()。
A.
导入 期 阶段
B.
衰退 期 阶段
C.
成熟期 阶段
D.
成长 期 阶段
【单选题】在激烈的竞争环境中,处在同一行业的企业纷纷通过市场营销争取某产品的最大市场份额,这种情形标志着该产品已进入生命周期的( )。
A.
导入期阶段
B.
成长期阶段
C.
成熟期阶段
D.
衰退期阶段
【单选题】We should not ______ the West, nor should we praise it to the skies and think great of everything that belongs to the West.
A.
forgive
B.
forsake
C.
forlorn
D.
forage
【单选题】Why was the author feeling bold that day?
A.
The boy she'd like to date smiled and said good morning to her.
B.
She was very anxious to greet him.
C.
She can't wait to hear his voice.
D.
She has been waiting for too long to talk to him.
【简答题】We should also remember to praise ______
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