问题
单项选择题
激活补体活化的MBL途径中所属离子是（）
A.Ca2+
B.Mg2+
C.Na+
D.K+
E.P3+
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
激活补体活化的MBL途径中所属离子是（）
A.Ca2+
B.Mg2+
C.Na+
D.K+
E.P3+
参考答案：A
| 选词填空。请从方框内选择适当的词语完成这封信。 | |
| |
| Dear Bob, My name is Rich .I’m fourteen years old .I’m(1)_______ in a middle school .My school is nice and clean. There are 30 students in my class .It’s(2) _______ today . My classmates and I are(3) _______ a good time on the beach .It’s a nice place .The water is blue and clear . Many birds are (4) _______ over the sea .Many people are (5)_______.Some boys are(6) _______ football.Some people are (7) _______ on the beach . A girl is(8) _______ pictures on a chair .Another girl is (9)_______ photos . I’m (10) ________to you ! What are you doing ? I hope you can write to me soon . Best wishes! Rich 1______ 2______ 3______ 4______ 5______ 6______ 7______ 8______ 9______ 10______ |