男，11岁，有遗传性多发性骨软骨瘤史，现左髋部肿胀、疼痛明显，

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问题单项选择题

男，11岁，有遗传性多发性骨软骨瘤史，现左髋部肿胀、疼痛明显，结合图像，最可能的诊断是()

A．尤文肉瘤

B．软骨肉瘤

C．骨肉瘤

D．化脓性骨髓炎

E．骨软骨瘤

答案

参考答案：B

句型转换

根据所给的汉语提示，转换下列句型。

1. My sister doesn't like going to the party because she often gets nervous in front of

many people. (对画线部分提问)

___ _ your sister go to the party?

2. Our teacher is so tired that he can't play basketball with us. (改为同义句)

Our teacher is __ __ tired ___ _ play basketball with us.

3. I think your little sister is very shy. (改为否定句)

I ____ think your little sister ____ very shy.

4. I am afraid of speaking in front of strangers. (改为同义句)

I am ___ _ speaking in front of strangers.

5. Our teacher wants me to represent my class in the contest. (对画线部分提问)

___ _ your teacher want you to do?

选择题

下列关于浓硫酸的描述错误的是 [ ]

A．溶子水时放出大量的热

B，有强烈的腐蚀性

C．稀释浓硫酸时，切不可将水倒进浓硫酸中

D．可在量筒中用浓硫酸配制稀硫酸