问题 填空题

请用化学用语填空:

(1)2个氢原子      ;    (2)空气中含量最多的物质      

(3)氯离子      ;       (4)氧化钙中钙元素的化合价为+2价      

答案

(1)2H  (2)N2   (3)Cl-     (4)Ca+2O

根据原子的表示方法:用元素符号来表示一个原子,表示多个该原子,就在其元素符号前加上相应的数字;离子的表示方法:在表示该离子的元素符号右上角,标出该离子所带的正负电荷数,数字在前,正负符号在后,带1个电荷时,1要省略;根据元素化合价的表示方法:确定出化合物中所要标出的元素的化合价,然后在其化学式该元素的上方用正负号和数字表示,正负号在前,数字在后。

单项选择题 A1型题
阅读理解

    Last night was the last game for my eight-year-old son's soccer team. It was the final quarter. The score was two to one, my son's team in the lead. Parents surrounded the playground, offering encouragement.

With less than ten seconds remaining, the ball suddenly rolled in front of my son's teammate, Mickey O'Donnel. With shouts of "Kick it!" echoing (回响) across the playground, Mickey turned around and gave it everything he had. All around me the crowd erupted (沸腾). O'Donnel had scored!

Then there was silence. Mickey had scored all right, but in the wrong goal, ending the game in a tie. For a moment there was a total hush. You see, Mickey has Down syndrome (综合症) and for him there is no such thing as a wrong goal. All goals were celebrated by a joyous hug from Mickey. He had even been known to hug the opposing players when they scored.

The silence was finally broken when Mickey, his face filled with joy, hugged my son tightly and shouted, "I scored! I scored. Everybody won! Everybody won!" For a moment I held my breath, not sure how my son would react. I need not have worried. I watched, through tears, as my son threw up his hand in the classic high-five salute and started chanting, "Way to go Mickey! Way to go Mickey!" Within moments both teams surrounded Mickey, joining in the chant and congratulating him on his goal.

Later that night, when my daughter asked who had won, I smiled as I replied,  "It was a tie. Everybody won."

61. What was the score of the soccer match?

A. Two to two, equal to both the teams.        B. Three to one in Mickey's team's favor.

C. Two to one in the opposite team's favor.        D. Everybody won because of Mickey's goal.

62. The underlined word "hush" in paragraph 3 means

A. cheer    B. cry      C. laughter   D. silence

63. What did the author worry about when Mickey scored and hugged his son?

A. The result of the match would fail his son.

B. His son would shout at Mickey for his goal.

C. Mickey would again hug the opposing players.

D. His son would understand Mickey's wrong goal.

64. It can be inferred(推断出) from the passage that ________.

A. both teams liked and respected Mickey

B. both teams were thankful to Mickey for his goal

C. Mickey didn't mind though his goal was wrong

D. Mickey was a kind- hearted boy and hoped everybody won

65. The purpose of the author in writing the passage is ________.

A. to tell a joke to make readers laugh

B. to suggest we should not mind losing

C. to show enjoying a game is more than winning a game

D. to present his son's fine qualities of understanding others