在生物的个体发育中,一个受精卵能发育成复杂的生物体.生物体之所以复杂,主要是下列

题型:选择题

问题:

在生物的个体发育中,一个受精卵能发育成复杂的生物体.生物体之所以复杂,主要是下列哪一生理过程在起作用(  )

A.细胞的成熟

B.细胞的分化

C.细胞的生长

D.细胞的分裂

考点:细胞的分化
题型:选择题
Reading comprehension.
    Mary and Tom go to the West City Supermarket to do some shopping. Here are the prices of the things
in the supermarket and their shopping lists.
AppleRiceBanana
Canada ¥3
each
Japan
¥60/bag
Thailand
¥10/kg
China ¥2
each
Australia
¥49/bag
USA
¥12/kg
USA
¥4 each
Thailand
¥45/bag
China
¥8/kg
ButterSteak (牛排)Milk
Australia
¥13/box
USA
¥30/kg
USA
¥6/box
New Zealand
¥12/box
Australia
¥45/kg
New Zealand
¥5/box
Japan
¥15/box
Japan
¥60/kg
China
¥3/box
     Mary's shopping list: 4 apples; 1 bag of rice; 1 box of butter; 2 boxes of milk; 1kg of steak; 3kg of
bananas 
     Tom's shopping list: 1 box of butter (Australia); 1kg of steak (Australia); 3 apples (Canada); 2kg of
bananas (Thailand) (泰国)
1. At first Mary wants to buy the things from China. She can only buy ______ from this supermarket.
[ ]
A. rice, apples and butter
B. milk, bananas and steak
C. apples, bananas and milk
2. From the passage we know Mary buys            from Australia.
[ ]
A. apples; rice and butter
B. rice, butter and steak
C. butter, steak and apples
3. How much does Mary pay for the things from China and Australia?
[ ]
A. ¥105.
B. ¥145.
C. ¥135.
4. How much does Tom pay for the things?
[ ]
A. ¥88.
B. ¥80.
C. ¥87.
5. Which of the following is NOT true?
[ ]
A. Rice and banana from Thailand are the cheapest.
B. The prices of the things from Japan are the highest.
C. Tom and Mary bought the same kinds of fruit in the supermarket.
题型:选择题

一早产儿,女,年龄4天。出生体重1800g,体温35℃。以下哪项处理措施不妥()。

A.及早使用抗生素

B.置温箱中保暖

C.保持呼吸道通畅

D.严格执行消毒隔离制度

E.输液过程应注意控制滴速

题型:选择题

某企业2013年12月31日"无形资产"科目余额为10000万元,"累计摊销"科目余额为3000万元,"无形资产减值准备"科目余额为500万元。该企业2013年12月31日资产负债表"无形资产"的项目金额为()万元。

A.6500

B.7000

C.9500

D.10000

题型:选择题

设备的运动部件的运动面上涂有防锈层时,在未()前,不得使其运动。

A.清洗

B.检查

C.测试

D.验收

题型:选择题

关于飞机气源系统位置叙述不正确的是()

A.发动机引气系统位于发动机及支撑吊架内

B.APU引气管在隔离活门左侧和气源导管相接

C.APU引气管在隔离活门右侧和气源导管相接

D.地面勤务接头在隔离活门右侧和气源导管相接

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