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【简答题】
Dr. Martinez put on a false smile (假笑) as she entered Janet Eslin’s hospital room. She couldn’t let Janet see that she was worried. Yet she had been searching for the cause of Janet’s illness and hadn’t found a clue(线索). “How are you feeling today?” Dr. Martinez asked her patient. Janet replied that she felt about the same----terribly uncomfortable. The doctor tried to get Janet’s mind off her health by talking about Janet’s vacation at Lake Winnow. But Dr. Martinez couldn’t keep her own mind on the conversation. She kept wondering what could be wrong with her patient. Suddenly Janet’s words interrupted Dr. Martinez’s thoughts: “… the vacation was really perfect, except for the food. The last meal I ate was especially terrible.” Dr. Martinez quickly snapped back into the conversation, “Janet, when did you eat that meal?” Janet said that it had been the day before yesterday. “I think we’ve discovered your problem,” Dr. Martinez said as she left. Several hours later, Dr. Martinez was back with the answer. “Janet, the food you ate made you ill. You’re suffering from food poisoning. Now that we know what’s wrong, we can take care of your problem.” 小题1:What made Janet sick? A.an insect bite B.bad food C.bad water D.cold weather 小题2:What is the main idea of the story? A doctor discovers what made Janet sick. Dr. Martinez becomes ill. Janet goes on vacation. A doctor talks to Janet in the hospital. 小题3:Where did Janet go on her vacation? A. She took a trip to the city. B. She went camping in the mountains. C. She spent a week at the seashore. She took a trip to a lake. 小题4:What does the underlined word “interrupted” mean? A.talked about B.told over again C.broke in while someone was talking D.never stopped listening to the other person
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举一反三
【单选题】在容积一定的密闭容器中,置入一定量的 和足量 ,发生反应 ,平衡状态时NO(g)的物质的量浓度c(NO)与温度T的关系如图所示,则下列说法中,正确的是
A.
该反应的△H>0
B.
若该反应在 时的平衡常数分别为 ,则
C.
在 时,若反应体系处于状态D,则这时一定有
D.
在 时,若混合气体的密度不再变化,则可以判断反应达到平衡状态
【单选题】如图是a、b两种固体物质的溶解度曲线,下列说法中错误的是(  )
A.
a、b都属于易溶性物质
B.
分别降温t℃a、b的饱和溶液至0℃,析出的a比b多
C.
在t℃时,a、b的饱和溶液中溶质质量分数相等
D.
当a中含有少量b时,可以用降温结晶法提纯a
【单选题】右图是A、B、C三种物质的溶解度曲线。下列叙述正确的是 (     )
A.
t 1 ℃时三种物质的饱和溶液升温到t 3 ℃所得溶液溶质质量分数大小关系为A>B>C
B.
t 2 ℃时,A、B两种物质的溶液中所含溶质质量相等
C.
t 2 ℃时,20g B溶解于50g水中能形成70溶液
D.
若要将组成在N点的A溶液转变为M点的A溶液,可以采取恒温蒸发溶剂的方法
【单选题】某可逆反应a A(g)+bB(g) cC(g),在温度分别为T 1 和T 2 ,压强分别为P 1 和P 2 条件下,得到C的物质的量 n 与时间 t 的关系曲线如下图所示。 据图分析,以下正确的是
A.
c>a+b,正反应为吸热反应
B.
c>a+b,正反应为放热反应
C.
c
D.
c
【简答题】在容积为1L的密闭容器中,进行如下反应: A(g)+2B(g) C(g)+D(g),在不同温度下,D的物质的量n(D)和时间t的关系如图。试回答下列问题: (1)800℃时。0—5min内,以B表示的平均反应速率为____ 。 (2)能判断该反应达到化学平衡状态的依据是____ 。 A.容器中压强不变 B.混合气体中c(A)不变 C.2v 正 (B)=v 逆 (D)     D.c(A)=c(C)...
【简答题】生产力和生产关系之间的相互关系是怎样的?
【判断题】for循环的循环体语句中,可以包含多条语句,但必须用大括号括起来。
A.
正确
B.
错误
【单选题】在温度 T 时, A 和 B 以物质的量比为 2:1 的比例组成理想液态混合物,已知此时 分别 91.192kPa 和 30.397kPa ,则平衡时在气相中 A 和 B 的摩尔分数比 应为
A.
8:1
B.
6:1
C.
4:1
D.
2:1
【简答题】在容积为1 L的密闭容器中,进行如下反应: A(g)+2B(g) C(g)+D(g),在不同温度下,D的物质的量n(D)和时间t的关系如图。 请回答下列问题: (1)700℃时,0~5min内,以B表示的平均反应速率为_______。 (2)能判断反应达到化学平衡状态的依据是__________。 A.容器中压强不变      B.混合气体中c(A)不变 C.v 正 (B)=2v 逆 (D)   ...
【单选题】对《我愿意是急流》赏析不正确的一项是( )
A.
诗篇标题是“我愿意是急流” ,然而它却未凝聚全诗的主题;全诗的主题应该是歌颂奉献精神。
B.
诗篇的表现方法主要是比喻。诗人选择了急流、小河、小鱼、荒林、小鸟、废墟、常春藤、草屋、炉子、火焰、云朵、夕阳„„一系列比喻,多角度刻画了“我”的高大形象。
C.
诗中的第一人称“我”,可以说是诗人自己的化身。文学作品中用第一人称来写,易给人一种真实感,例如《一件小事》《记念刘和珍君》中的我,都是鲁迅先生本人
D.
诗篇形式优美。全诗 5 段,每段 8 句,整齐划一;句式简短,节奏感强;译文注重韵脚,使得旋律悠扬,铿锵悦耳。
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