以下关于上颌窦癌的叙述，哪项是错误的（） A.以鳞癌为最常见 B.早期无症状而不易发

用所给单词的适当形式填空（每空1分，共5分）

grade      fail        great       get        because

Dear Dad ,

The day before yesterday was Father’s Day .I couldn’t celebrate it for you because I was busy taking the high entrance exam . But I have said “I love you, Dad !” in my heart many times .

You are an ordinary (普通的) man ,but in my eyes, you are the小题1:father in the world . Every time I have trouble, you always give me advice and help me out. I remember once I小题2:in a competition ,and I felt very upset . Instead of complaining, you just said to me quietly, “It doesn’t matter . A real man must learn to face many failures (失败) in life bravely .Cheer up !”

Dad,I am not going to buy you anything as a present小题3:I don’t think it express my thanks to you .I’ll try my best to get good小题4:.I think that is the best present you are looking forward to小题5:. I’m sure I won’t let you down .

Hope my dear dad is healthy forever.

甲公司与乙公司依法订立一份总货款为20万元的购销合同。合同约定违约金为货款总值的5％。后乙公司违约，给甲公司造成损失2万元。乙公司应依法向甲公司偿付( )。

A．2万元
B．1万元
C．2.5万元
D．3万元

输送城市燃气的管道距离较长，管道的造价及金属用量在输配系统中所占的比重很大。显然，输送（）燃气对输配系统的经济性是有利的

A、低发热值

B、高密度

C、低温度

D、高发热值

气胸（）

A．肺部叩诊过清音

B．肺部叩诊鼓音

C．肺部叩诊清音

D．肺部叩诊实音

E．肺部叩诊浊音

为什么中英建立的是代办级外交关系？