两个相同的金属小球，带电荷量之比为1:7，相距为r，两者相互接触后再放回原来的位置上，则它们间的库仑力可能为原来的( )
A．
B．
C．
D．
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Dear Tommy ,
Thanks for your family photo. Here is a photo of my room.
Look at the photo. My room is not very big. A bed, a desk, a chair, a bookcase are in my room. My
bed is near the window (在窗户边). The desk is next to the bed and it's white. The chair is near the
desk. The bookcase is beside (在……旁边) the desk and it's white, too. An English dictionary and a
Chinese dictionary are on the bookcase. My math, English and Chinese books are on the desk. The
computer is on the desk, too. My pencil case is in the backpack. My pens, pencils and rulers are
in the pencil case. My backpack is on the chair. Some green plants are on the floor. My baseball is under
the bed. But you can't see my jacket in the photo.
Yours ,
Sally
1. This is a photo of _____.
A. Tommy's family
B. Sally's family
C. Tommy's room
D. Sally's room
2. The bookcase is _____.
A. white
B. yellow
C. beside the plant
D. beside the bed
3. You can't see _____ in the photo.
A. any plants
B. a baseball
C. any books
D. a jacket
4. The backpack is _____.
A. on the chair
B. on the floor
C. on the desk
D. under the bed
5. Which of the following is NOT right?
A. Two dictionaries are in the backpack.
B. The pencil case is in the backpack.
C. The baseball is under the bed.
D. The computer is on the desk.
酥油茶是（）族同胞的传统饮料。
英美法系国家通常以（）为属人法。
如果外汇交易员即期卖出日元3,450,000，买入美元30000，随后，又即期卖出美元20000，买入欧元16500，则两笔即期交易后，该交易员的头寸情况为_________。
A．美元多头10000，日元少头3,450,000，欧元多头16500
B．美元多头10000，日元空头3,450,000，欧元多头16500
C．美元头寸轧平，日元空头3,450,000，欧元多头16500
D．美元多头10000，日元空头3,450,000，欧元空头16500
忠者男性，32岁，工作时突然出现剧烈头痛6h,伴喷射状呕吐。检查叫肢活动自如，脑膜刺激征阳性，该患者最可能的诊断是
A．脑膜炎
B．脑出血_
C．脑血栓
D．高血压危象
E．蛛网膜下腔出血