尼扎替丁为
A．止咳药B．抗酸药C．抗过敏药D．平喘药E．H2受体阻断药
参考答案：E
解析：尼扎替丁能阻断胃壁细胞H2受体，抑制胃酸分泌。
He planned to go to France to ______ his art of painting.
A．cut out
B．come by
C．brush up
D．make up
等高线有哪些特性？
