欲构造ArrayList类的一个实例,此类实现了List接口,下列( )方法是正确

题型:单项选择题

问题:

欲构造ArrayList类的一个实例,此类实现了List接口,下列( )方法是正确的。

A.ArrayList myList = new Object( );

B.List myList = new ArrayList( );

C.ArrayList myList = new List( );

D.List myList = new List( );

考点:计算机等级考试JAVA二级JAVA笔试
题型:单项选择题
综合填空:用方框中所给单词的适当形式填空,使短文正确、通顺。
  
or  put  try back  time  every  against  chair  easily  relax
   Looking after your back If you want to have a strong healthy back, you should have good posture (姿势).
You should put the least stress (压力) on your 1______. If you have good posture, you won't get tired
2______ you won't get pain in your back;you will look good!
     When you are sitting down,
     ★ 3______ to keep your back straight.
     ★Don't cross your legs.
     ★Put your back 4______ the back of the chair.
     If you are working on a computer,
     ★Sit back and 5______ your arms out to the keyboard.
     ★Bring your 6______ up close to the keyboard so that you can rest your arms on the chair 7______ desk.
Keep your shoulders 8______.
     ★You need to rest and move around 9______ 30 minutes to let your body relax.
     ★Try bending (弯) back a few 10______ to help your body relax.
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若点A(n,2)与B(-3,m)关于原点对称,则n-m等于[ ]

A.-1

B.-5

C.1

D.5

题型:单项选择题

根据世界人种分布图,回答下列问题。(4分)

(1)分布在非洲中南部的人种主要是______,目前该人种在美洲也有分布,其原因是______

__________________。

(2)分布在大洋洲的白种人,来自遥远的______。

(3)根据人类体质方面的特征,我们中国人属于______。

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何谓细胞水肿?常见于哪些器官?原因如何?

题型:单项选择题

患儿于4天前出现发热恶风,咽痛,现症见:面部及眼胞浮肿,小便短少而黄,苔薄白,脉浮数。其证候是

A.风水相搏证

B.水湿浸淫证

C.脾虚水泛证

D.肾虚水泛证

E.湿蕴中焦证

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