青蒿素的主要作用是
A．抗菌B．抗痛风C．散瞳、解痉D．抗疟疾E．镇痛
参考答案：D
解析：青蒿素是我国最先发现的天然抗疟药。
I’m not surprised that he became a writer. Even as a child he had a _____ imagination.
A．clear
B．cautious
C．funny
D．vivid
面色苍黄、颜面水肿、睑厚面宽、目光呆滞、反应迟钝、眉毛、头发稀疏、舌色淡而肥大的是
A．伤寒面容
B．黏液水肿面容
C．二尖瓣面容
D．贫血面容
E．肾病面容
