利用食盐、食醋、纯碱等家庭厨房常见物质,不能完成的实验是[ ] A.除水垢 B.

题型:选择题

问题:

利用食盐、食醋、纯碱等家庭厨房常见物质,不能完成的实验是[ ]

A.除水垢

B.鉴别食盐和纯碱

C.检验溶液是否呈碱性

D.证明面粉发酵时产生的酸

考点:家庭小实验、趣味实验
题型:选择题

Why are black cats bad?

November 17 is an important day for black cats in Italy. An animal rights group has named that day “Black Cat Day” to stop the killing of thousands of the cats. Why do people     the animal so much? It is because people believe black cats bring bad luck if they walk across your path.

The black cat is just one of the     of superstition(迷信).You may already know that Western people don’t like the number 13. They also believe that walking under a ladder, opening an umbrella indoors and      a mirror can also bring bad luck.

According to Andrew Macaskill, who works for Times , British people believe it is    to see one magpie(喜鹊). But two bring good luck. “In Britain, people like to have a horseshoes over the door. They believe it can bring good luck,” Macaskill said. “But the horseshoe needs to be the right way up. The luck     if it is upside down.”

In the US, people usually spit on a new baseball bat before using it for the first time. They think this can bring good luck. Also, it is believed that good spirits live in trees. So by knocking on anything made from wood, people can call upon those spirits for protection against misfortune. People in the US also believe there are evil(邪恶的) spirits in blooms(扫帚). So     lean a broom against a bed. The evil spirits will cast a spell on the bed.

小题1:

A.love

B.keep

C.hate

D.raise

小题2:

A.symbols

B.stories

C.ways

D.means

小题3:

A.buying

B.breaking

C.borrowing

D.bringing

小题4:

A.lucky

B.unlucky

C.possible

D.impossible

小题5:

A.throws away

B.runs away

C.gives away

D.puts away

小题6:

A.always

B.usually

C.sometimes

D.never

题型:选择题

如见脘腹作胀,胁肋隐痛,肢困纳呆,便溏,脉弦细,宜用何药:

A.逍遥散

B.柴胡疏肝散

C.四物汤

D.黄芪建中汤

E.六君子汤

题型:选择题

A tree was planted along the road _____.(Choose the one that is NOT proper for the blank)[ ]

A. every ten metres  

B. every tenth metre

C. every other metre  

D. every the tenth metre

题型:选择题

按照法律规定,( )不能成为建筑施工合同的担保人。

A.银行
B.建筑公司
C.建设主管部门
D.贸易公司

题型:选择题

我们在衡量一批产品时,以下哪些是批的质量指标()。

A.某个质量指标的平均值

B.不合格品率

C.某个质量指标的含量

D.某个质量指标的标准差

E.每百单位产品平均不合格品数

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