"大满月"的时间为（） A.产后1月 B.产后6周左右 C.产后百天 D.产后10天

Happy Sunday

I have four goldfishes in my room. They are very beautiful. I love them very much. On weekdays, I’m always busy. I must study and do homework and so on, so I have no time to care(照顾) them.

But today is Sunday, I am very free. Then, I start to enjoy my goldfishes. They are colorful, but each has a big mouth, two small eyes and a long tail（尾巴）. I take the food and intend（打算）to feed them. They are very intelligent（聪明）. It seems that they know I will feed them, so they are coming up from everywhere. Everyone is opening up its big mouth and waiting for the delicious food. I am smiling! They look very lovely! Then, I put the food into the tank（水缸）. They are eating it very quickly. I enjoy this process（过程） very much!

Today, I am really happy! What a happy Sunday!

小题1:How many goldfishes are there in the home?

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小题2:Why can not the writer(作者) care the goldfishes on weekdays?

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小题3:What do the goldfishes look like?

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小题4:When can the writer feed the goldfishes?

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小题5:Does the writer have a good time on Sunday?

下列关于PET2D和3D采集的描述错误的一项是（）。

A.3D采集的数据过剩，2D采集的数据不完整

B.2D采集只允许同环内的探测器相互形成符合线

C.3D采集允许不同环间的探测器相互符合

D.3D方式使系统的灵敏度远远高于2D方式

E.3D散射符合所占的比例大大低于2D方式

加涅在《学习的条件》一书中先后提出的（）分类和（）分类影响较大。

4个月婴儿，在儿保门诊检查，下列哪些情况认为发育异常______

A．前囟未闭
B．乳牙未萌发
C．头不能抬起
D．不能伸手取物
E．拥抱反射

有腹筋梁抗剪力计算公式中的0.7ftbh0是代表下列哪项抗剪能力。（）

A.混凝土

B.不仅是混凝土的

C.纵筋与混凝土的

D.纵筋的