β型溶血性链球菌侵入人体后可产生下列哪些病变()A．化脓性病变 B．中毒性病变 C．

Everywhere we look, there is colour. We see it in the sky and in the sea. There are colours in all plants and animals. Colour makes our homes and schools pretty. We see it in pictures and in books. We even see colour in our food. It makes things look good.

How can we see colour? We see colour when light hits(射入)our eyes. Dogs and many other animals can’t see colours. But bees(蜜蜂) can. They even see colours we don’t see. This helps them find flowers to fly to.

We sometimes use the names of colours to say things. People may say that they “see red” when they are angry(生气). Or you may say you “feel blue”. This means you are sad. We use colour to tell things., too. Red is the colour of stop signs. It means to stop. Green means to go.

Animals come in all kinds of colours. Many of these are very pretty. An animal’s colour may say “here I am”., “stay away” or “be careful” or it may help the animal hide(隐藏). Some animals can make their colours look like the trees around them, then other animals or people can not find them.

小题1:The best title(题目) of the article is _______.

A．Sky

B．Sea

C．Animal

D．Colours小题2:The first paragraph(段落) tells about ________.

A．many kinds of colours

B．the function(作用) of colour

C．the colour of the sea

D．the colour of the sky小题3:_______ can’t see colours in the sky.

A．A little boy

B．A bee

C．An old man

D．A dog小题4:Which is right?

A．Everything has colour.

B．All animals’ colours may help them hide.

C．Bees can see colours we don’t see.

D．When you see green at the crossing, you must stop.小题5:Which is wrong?

A．We see colour when light hits our eyes.

B．We sometimes use the names of colours to say things.

C．We see colours in pictures and in books.

D．We can’t see colour in our food.

______ the soldiers will go to help find the missing plane.

A．Three thousand

B．Three thousands

C．Three thousand of

D．Three thousands of

患者，男性，74岁，近半年来，常于劳累后感胸闷、憋气，休息后缓解。昨日夜间睡眠中突然感憋气、胸闷，伴咳嗽，咳少量白色泡沫样痰，急诊入院诊为"慢性心力衰竭"，该患者胸片检查反映其慢性肺淤血的特征性表现是（）

A.肺门蝴蝶状阴影

B.肺门血管影增强

C.KerleyA线

D.KerleyB线

E.KerleyC线

患者，男性，41岁，6小时前饮酒后出现上腹部绞痛，向肩背部放射，送到医院急诊，怀疑为急性胰腺炎，此时最具诊断意义的实验室检查为（）

A.血清脂肪酶测定

B.尿淀粉酶测定

C.血钙测定

D.血清淀粉酶测定

E.白细胞计数