—Yeah, she works hard and practices_________ it both in and out of class.
A：speaking
B：to speak
C：spoke
D：speak
与真菌相比，细菌特有的结构特点是（ ）
阅读下面的一段话，判断正误。
Hi! I'm John. Come here, my friends! Look at my dog. It has two big eyes. It's very cute. This is my cat, Mimi. It's fat. It's two years old. I have six fish. Oh! Mimi likes(喜欢) my fish. I have a bird, Polly. It's beautiful!
人的体温一般都为37℃左右，这是人体通过____调节和激素调节控制人体的产热和散热过程的结果。当气温下降时，人体将体温下降的信息传到脑内的体温调节中枢，经过整合后，通过战栗、皮肤血管收缩、____（选填“甲状腺激素”或“胰岛素”）分泌增加等途径使体内产热增加，散热减少。
