皮皮学，免费搜题
登录
搜题
【简答题】
短文改错 Recently, my classmates have had a hea ted discussion about if we should have optional courses (选修课) in high schools. Some students were in favor of optional courses. They say interest is best teacher and our spare time will be colorful and meaningful. Students can not only enlarge their knowledges but also improve their abilities. However, others are against the idea, said that optional courses will take up too much time as well as energy. Besides, some optional courses have something to do with the College Entrance Examination. They are afraid they'll fall behind their classmates if they will take optional courses. I'd like to take one or two of the optional courses, which, I think, will certain benefit me lot. _____________________________________________________________________________
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】木塑复合材料注射成型过程中的压力直接影响木塑熔体塑化和最终制品的质量,这种压力主要包括哪两种压力?( )
A.
成型压力
B.
塑化压力
C.
注射压力
D.
挤出压力
E.
压缩压力
【单选题】浆细胞系统形态学特点描述正确的是
A.
圆形或椭圆形，胞质量多，呈深蓝色或火焰状
B.
椭圆形或不规则形，胞质量多，有泡沫感
C.
胞质量多，呈深蓝色、透明
D.
原始浆细胞无核仁
E.
幼浆细胞核染色质呈深紫红色，比原浆细胞细致
【单选题】浆细胞系统形态学特点描述正确的是
A.
圆形或不规则形,胞质量多,呈深蓝色或火焰状
B.
圆形或类圆形,胞质量多,有泡沫感
C.
胞质量多,呈深蓝色、透明
D.
原始浆细胞无核仁
相关题目：