下列叙述中正确的是 A.Li是最轻的金属,也是活动性极强的金属,是制造电池的理想

题型:选择题

问题:

下列叙述中正确的是

A.Li是最轻的金属,也是活动性极强的金属,是制造电池的理想物质

B.蔗糖、油脂及它们的水解产物均为非电解质

C.海水提取溴、煤的液化、焰色反应都发生了化学变化

D.钢铁在海水中比在河水中更易被腐蚀,主要原因是海水含氧量高

考点:新型材料(新型陶瓷、单晶硅等)生活中的其他材料及应用(纳米材料、功能高分子材料等)
题型:选择题

阅读理解。

     A train stopped at a small station. A man looked out of the window and saw a woman. She was selling

cakes. People from the train were buying them. The man wanted to buy a cake, but the woman was standing

far from the window. It was raining, and the man didn't want to go out in the rain.

     Suddenly he saw a boy. He was walking on the platform (站台) not far from him."Come here, boy!" the

man said."Do you know how much those cakes cost?"

     "Five cents for each," the boy answered.

     The man gave the boy ten cents and asked him to buy two cakes."One for me, and one for you," he told

the boy.

     A few minutes later, the boy came back. He was eating a cake. He gave the man five cents and said,

"There was only one cake."

1. The woman was selling cakes _________.

A. on the train

B. by the window

C. at the station

D. far from the station

2. The man wanted to _________.

A. get off the train

B. buy a cake

C. talk to the woman

D. take a walk

3.  The boy was _________.

A. clever

B. far from the train

C. selling cakes

D. playing there

4.  At last the man _________.

A. didn't get anything

B. got one cake to eat

C. was pleased with the boy

D. got half of the money back

5. When the boy gave back five cents to the man, the boy was _________.

A. eating two cakes

B. very sorry

C. eating one cake

D. very unhappy

题型:选择题

什么是Thomsen病()

A.肌强直性营养不良

B.先天性肌强直

C.多发性肌炎

D.肌营养不良

E.以上均不是

题型:选择题

启发是从其它事物能够看出解决问题的途径。对解决问题起到启发作用的事物叫做原型。(心理学)

题型:选择题

()质地坚硬,耐腐蚀、耐磨、易于清洁,可用于工业与民用建筑的门厅、走廊、卫生间、餐厅等的内墙和地面。

A.釉面砖

B.彩色釉面陶瓷墙地砖

C.无釉面陶瓷墙地砖

D.陶瓷锦砖

题型:选择题

车辆在高速公路行驶时,可以仅凭感觉确认车速。

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