来自太阳的一部份粒子瀑布般地落入地球的高层大气。因粒于带电,它们被吸向地磁两极,地球的高纬度地区便能看到异常明亮的极光。
参考答案:对
阅读理解。
Welcome to order (订购) Healthy-food Basket. It's only $87. Healthy-food Basket is a good
present for your friends and family. You can send it to them on special (特殊的) days or on any day!
There is fresh fruit, cookies, juice and water in the basket. To order the basket, you can:
●Call Mr. Smith at 586974
●Send an e-mail to healthy-food basket @ yahoo. com.
1. How much is Healthy-food Basket? It's ________.
A. $ 78
B. $87
C. $98
D. $76.
2. You can't find ________ in the basket according to (根据) the passage.
A. some fruit
B. some cookies
C. some vegetables
D. some juice
3. You can order the basket by ________.
A. writing a letter
B. calling Mr. Smith at 586974
C. sending an e-mail
D. B and C
患儿,男性,2岁,因"发现心脏杂音2年"来我院门诊就诊。患儿出生时常规查体发现心脏杂音,但未对此详查。平素活动可,无紫绀、晕厥史。体重及身高发育较同龄儿童稍差,易感冒。门诊查体示:体重10kg;心率98次/分,心律整齐。心前区稍隆起,心脏搏动增强。心音清晰有力,胸骨左缘2~3肋间闻及2/6级柔和的收缩期杂音。双肺呼吸音清,未闻及干、湿啰音。唇甲无紫绀。
(提示患儿经原切口路径,在体外循环下行ASD再次修补术。)术中可能见到的病理改变是()
A.心包粘连
B.右房增大
C.左房增大
D.右室增大
E.左室增大
F.肺动脉增粗
G.原ASD修补缝线撕脱