问题 单项选择题 A3型题

为考核口服痢疾弧菌疫苗预防细菌性痢疾的效果,将1000名研究对象随机分成疫苗组和对照组,两组分别500人。以血清抗体的阳转和细菌性痢疾发病率的下降为结局变量指标,随访观察2年时间。研究结果表明,疫苗组的痢疾杆菌抗体阳转者450人,对照组的抗体阳转者50人;疫苗组发生细菌性痢疾病人15人,对照组发生细菌性痢疾病人60人。

该研究中主要结局变量是()

A.细菌性痢疾发病率

B.抗体阳转率

C.服苗率

D.随访率

E.细菌性痢疾发病率和抗体阳转率

答案

参考答案:A

阅读理解

Cuts

Bleeding can usually be stopped by applying pressure to the cut for 2 or 3 minutes. The cut can then be carefully inspected. If it has bled freely any germs will normally have been washed away by the blood.

Apply a plaster dressing firmly, bringing the edges of the cut together so that it knits quickly. Keep dry for 1 to 2 days.

If the cut is deep and the edges cannot be pulled together with a dressing consult the doctor or the practice nurse. A tetanus (破伤风) injection may be needed.

Grazes

Dirt will often enter a graze caused by falling on a hard or rough surface. It must be cleaned out carefully with an antiseptic solution. (消毒液)

After cleaning, leave the graze uncovered. Exposure to the air will cause a scab to form. This will gradually fry and fall off.

It is not a good idea to apply a dressing. This may stick to the graze or make it complete wet and infected.

Bruises

Bruises are very common in children. They normally get better in 7 to 10 days Parents sometimes worry that a bone may be broken, but if in doubt consult the doctor.  If a child gets up at once after a fall and moves about normally, it is unlikely that a bone has been broken.

Severe bruising can be treated by: Rest for 24 to 48 hours .In the case of a badly bruised leg, the limb should be raised. Lying in bed is the easiest way to do this.

A bad compress may ease a bad bruise if applied at once. This is made by leaving some material in water and applying it to the bruise.

Insect bites

These are common in the summer .They look like spots about 1/4’’across .They are very itchy (痒) and usually appear on exposed parts, e.g. arms and legs.

The itching can be relieved by calamine lotion (护肤药水).

Burns and scalds

Minor burns and scalds cause redness of the skin. Immediate treatment by pouring cold water over a burn is often helpful. If burns cause the skin severe hot or break the skin, the doctor should be turned to.

Sunburns should, if possible, be prevented by avoiding long exposure and covering exposed areas as much as needed. It may be treated by calamine lotion to relieve the pain.

1.The purpose of the booklet is _____

A.to tell us what to do until a doctor arrives.

B.to explain what cause minor illnesses.

C.to show that it is unnecessary to call a doctor.

D.to help us to treat minor illnesses at home

2.When treating a minor cut ,we are first told to _____.

A.clean out the wound.             B.press down on the wound.

C.wash the blood away.            D.close up the wound.

3.The injury which we are told how to avoid is _____.

A.sunburn.   B.insect bites.     C.scalds.   D.cuts.

4.Patients with badly bruised legs are advised to go to bed so that ______.

A.they can rest completely.        B.their injured leg can be lifted up.

C.they can leave their leg in water.        D.a cold compress can be applied

单项选择题