问题 单项选择题 共用题干题

男孩,5岁,自幼唇、指(趾)甲床青紫,乏力,活动后气促,体格发育落后,胸骨左缘第2~3肋间可闻及Ⅲ级收缩期杂音,经超声心动图证实为先天性心脏病,法洛四联症。

此患儿其心脏由哪4种畸形组成()

A.主动脉狭窄,室间隔缺损,肺动脉骑跨,右心室肥厚

B.主动脉狭窄,房间隔缺损,主动脉骑跨,左心室肥厚

C.肺动脉狭窄,室间隔缺损,主动脉骑跨,右心室肥厚

D.肺动脉狭窄,房间隔缺损,肺动脉骑跨,左心室肥厚

E.肺动脉狭窄,房间隔缺损,主动脉骑跨,右心室肥厚

答案

参考答案:C

单项选择题
阅读理解

The Brown Bear

My wife Laura and I were on the beach, with three of our children, taking pictures of shore birds near our home in Alaska when we spotted a bear. The bear was thin and small, moving aimlessly.

Just a few minutes later, I heard my daughter shouting, “Dad! The bear is right behind us!” An agreesive bear will usually rush forward to frighten away its enemy but would suddenly stop at the last minute. This one was silent and its ears pinned back---- the sign (迹象) of an animal that is going in for the kill. And it was a cold April day. The bear behaved abnormally, probably because of hunger.

I held my camera tripod (三脚架) in both hands to form a barrier as the bear rushed into me. Its huge head was level with my chest and shoulders, and the tripod stuck across its mouth. It bit down and I found myself supporting its weight. I knew I would not be able to hold it for long.

Even so, this was a fight I had to win: I was all that stood between the bear and my family, who would stand little chance of running faster than a brown bear.

The bear hit at the camera, cutting it off the tripod. I raised my left arm to protect my face; the beast held tightly on the tripod and pressed it into my side. My arm could not move, and I sensed that my bones were going to break.

Drawing back my free hand, I struck the bear as hard as I could for five to six times. The bear opened its mouth and I grasped its fur, trying to push it away. I was actually wrestling (扭打) with the bear at this point. Then, as suddenly as it had begun, the fight ended. The bear moved back toward the forest, before returning for another attack----- The first time I felf panic.

Apparently satisfied that we caused no further threat, the bear moved off, destroying a fence as it went. My arm was injured, but the outcome for us could hardly have been better. I’m proud that my family reminded clear-headed when panic could have led to a very different outcome.

小题1:The brown bear approached the family in order to _______.

A.catch shore birds

B.start an attack

C.protect the children

D.set up a barrier for itself小题2:The bear finally went away after it _______.

A.felt safe

B.got injured

C.found some food

D.took away the camera小题3:The writer and his family survived mainly due to their ______ .

A.pride

B.patience

C.calmness

D.cautiousness