胎儿血液循环,卵圆孔的血流方向是
A.自左房向右房B.自右房向左房C.自右房向右室D.自主动脉向肺动脉E.自肺动脉向主动脉
参考答案:B
句型转换。
1. She lived in New Zealand. (对划线部分提问)
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2. Anne and her friends are playing in the snow. (对划线部分提问)
3. There are twelve month in a year. (对划线部分提问)
4. It's cool in autumn. (同义句)
5. He bought a new house in 2000. (否定句)
具有HIV感染特异性的体征是
A.毛细血管扩张征
B.淡紫色或棕色斑
C.口腔毛状黏膜白斑
D.玫瑰疹样皮疹
E.脂溢性皮炎