变异型心绞痛的临床特点包括（）。 A.多为自发性，常有规律 B.常因劳累或情绪激动诱
题型：多项选择题
问题：
变异型心绞痛的临床特点包括（）。
A.多为自发性，常有规律
B.常因劳累或情绪激动诱发
C.发作时胸痛症状较严重
D.可自行缓解或含服硝酸甘油缓解
E.运动试验可为阴性
题型：多项选择题
A sign is another kind of language. Here are some of them that you see on the roads.
Number one is a sign with the number thirty on it. When drivers see this sign , they must not go at more than thirty kilometers can hour. We see this sign when we are getting near a town. Number two is a sign that we're near a crossing. We must drive carefully. Number three is a sign that there is a bend in the road. Again, we must drive slowly and carefully. It is not safe to go round a bend very fast. Number four is a sign that there is another road coming in from the right. There is a junction at this place. Number five is a sign that there is a hill and number six is a sign that the road gets narrow. Drivers must go slowly and carefully. Number seven has the word “ SCHOOL” on it. This is a sign that there is a school at the side of the street or the road. Perhaps there are children going to or leaving school. So drivers must look carefully and go slowly. Number eight is a sign with the letter “ P ” on it. The letter “ P ” means “ Parking ”. At some places, there're the signs “ No parking ” or “ No waiting”. If a driver leaves his car near one of these signs, a policeman may come and write down the number of his car.
小题1:At the places where you see Sign 1, .
A．you are already out of a town
B．you still have thirty kilometers to go
C．there must be many houses and buildings not far away
D．there must be a town thirty k8ilometers away小题2:The underlined word bend probably means here.
A．traffic
B．subway
C．turning
D．danger小题3:You have to drive not only slowly but also carefully when you find .
A．each of the eight signs
B．either of Signs 2 and 3
C．all of Signs 2, 4, 6 and 7
D．any of Signs 3, 5, 6 and 7小题4:People put these signs on the road in order to .
A．teach drivers lesson
B．make drivers even safer
C．stop cars going there
D．learn another kind of language小题5:Which can be the best title for this message?
A．Another language.
B．On the road.
C．What to do.
D．Traffic signs.