科学家在利用无土栽培法培养一些名贵花卉时，培养液中添加了多种必需化学元素。其配方

发布时间：2017-04-26 17:58 │ 来源：www.tikuol.com

题型：选择题

问题：

科学家在利用无土栽培法培养一些名贵花卉时，培养液中添加了多种必需化学元素。其配方如下表(培养液浓度mmol/L)：

其中植物根细胞吸收最少的离子是[ ]

A．Ca²⁺

B．SO₄^2-

C．Zn²⁺

D．H₂PO₄^-

考点：植物的矿质营养

题型：选择题

Reading comprehension.

Want to spend a wonderful evening?
Want go see your favorite pop singer?
Come on!
PLACE: Shanghai People's Square
Time: 7:00 pm Nov.7th
Ticker: ￥180

Welcome to Our Club
Do you want to be an artist?
Just come and have a try!
Music lesson     Price: ￥100
Dance lesson     Price: ￥50
Art lesson          Price: ￥60

Hunan History Museum
You should use the floor plan (楼层平面图) to find your way around. If you
are with your children, stay close to them. The museum is very big and it is easy
to get lost.
Open: 8:30 am-12:00 am & 2:00 pm -5:00 pm
Admission (入场费): ￥10; (children under 6 years old get in for free)

1. You can see your favorite pop singer _________.

A. in Shanghai People's Square
B. in the club
C. in Hunan History Museum

2. We can't learn _________ in the club.

A. Music
B. Art
C. English

3. If you want to have music and dance lessons, you will pay _________.

A. ￥100
B. ￥150
C. ￥180

4. People can visit the museum at _________ every day.

A. 1:00 pm
B. 3:00 pm
C. 7:00 pm

5. _________ can get into the museum for free.

A. An adult
B. A student
C. A child under 6 years old

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题型：选择题

若将变压器输出的交流信号按图所示与示波器连接，对示波器调节后，在荧光屏上出现的波形应为下图所示四种波形中的 (　　)．

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_______ is reported in the newspaper that talks between the two countries are making progress.

A．It

B．That

C．As

D．Which

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下列关于李白“挥手谢公卿”这句诗的译文，你认为正确的是()。

A．挥手感谢公卿

B．挥手向公卿道歉

C．挥手辞别公卿

D．挥手告诉公卿

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题型：选择题

四辊轧机上工作辊轴承的压力区位置在（）。

A.上方

B.下方

C.中部

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