二、多項(xiàng)選擇題(本大題共5小題，每小題2分，共10分)

在每小題列出的五個(gè)備選項(xiàng)中至少有兩個(gè)是符合題目要求的，請(qǐng)將其代碼填寫在題后的括號(hào)內(nèi)。錯(cuò)選、多選、少選或未選均無(wú)分。

1.生命活動(dòng)的基本特性是(        )

A.呼吸運(yùn)動(dòng)                                                      B.心臟跳動(dòng)

C.新陳代謝                                                      D.生長(zhǎng)發(fā)育

E.生殖

2.中樞神經(jīng)系統(tǒng)興奮傳遞過(guò)程的特征有(        )

A.單向傳遞                                                      B.中樞延擱

C.總和                                                             D.后放

E.聚合

3.外耳的結(jié)構(gòu)包括(        )

A.耳廓                                                             B.外耳道

C.鼓室                                                             D.鼓膜

E.咽鼓管

4.胰液的成分有(        )

A.胰淀粉酶                                                      B.胰脂肪酶

C.胰蛋白酶和糜蛋白酶                                    D.碳酸氫鹽

E.膽汁

5.腎單位包括(        )

A.腎小球                                                         B.腎小囊

C.腎小管                                                         D.集合管

E.直小血管