某阳离子的结果示意图为 ，则x的数值可能是（ ） A．9 B．10 C．12

阅读理解。

     A good way to pass an exam is to work hard every day in the year. You may fail in an exam if you are

lazy for most of the year and then work hard only a few days before the exam.

     Do not remember only grammar when you are learning English. Try to read stories in English and speak

in English as often as you can. A few days before the exam you should go to bed early. Do not study late

at night. Before you start the exam, read carefully over the exam paper. Try to understand the exact

meaning of each question before you pick up your pen to write. When you have finished your exam, read

your answers again. Correct (改正) the mistakes if there are any and make sure you have not missed

anything out.

1. If you want to do well in an exam, you must _____. [ ]

A. work hard every day in the year

B. study hard a few days before the exam

C. get up early a few days before the exam

D. keep doing your homework day and night

2. It is _____ to go to bed late at night before the exam. [ ]

A. useful

B. important

C. not helpful

D. difficult

3. Try your best to get the meaning of each question _____.[ ]

A. after you write down your answers

B. before you write down your answers

C. as soon as you write down your answers

D. while you are writing down your answers

4. In the last sentence "miss …out" means _____. [ ]

A. think it hard

B. be important

C. be wrong

D. forget to answer

5. If you want to learn English well, you must _____. [ ]

A. try to read as many English stories as you can

B. learn grammar well

C. try to speak in English as much as possible

D. A, B and C

右心室增大顺序一般为（）

A.后-前

B.后-左上

C.前-左上

D.前-左上-后

E.左上-前

稳定细胞(stable cell)

有如下类声明：
class XA
int x;
public:
XA(int n) x=n;
;
class XB: public XA
int y;
public:
XB(int a, int b);
;
在构造函数朋的下列定义中，正确的是( )。

A．XB::XB(int a，int b): x(a)，y(b)

B．XB::XB (int a，int b):XA(a)，y(b)

C．XB::XB(int a，int b): x(a)，XB(b)

D．XB::XB(int a，int b):XA(a)，XB(b)

（公元65年）冬十月，日有食之。……于是在位者皆上封事，直言得失。帝览章，深自引咎，乃以所上颁示百官，诏曰：“群僚所言，皆朕之过……永览前戒，悚然兢惧。”上述材料所反映的历史现象是（）

A.汉朝统治者吸取道家“无为而治”的思想，采取与民休息的政策

B.汉朝统治者所尊崇的儒术糅合了道家、法家和阴阳五行家的一些思想

C.汉朝统治者认为如果天子无道，上天便会降灾于他

D.汉朝统治者认为天子受命于天，人民和诸侯都要服从天子的统治