[在线考核] 嵌晶石细胞的细胞壁上具有 ( ) 日期:2021-05-08 16:58:44 点击:177 好评:0
(单选题)25: 嵌晶石细胞的细胞壁上具有 ( ) A: 簇晶 B: 方晶 C: 针晶 D: 柱晶 E: 砂晶 ...
[在线考核] 某一双子叶植物叶上的气孔,副卫细胞为三个,其中一个较小,该气 日期:2021-05-08 16:58:20 点击:109 好评:0
(单选题)19: 某一双子叶植物叶上的气孔,副卫细胞为三个,其中一个较小,该气孔轴式为 ( ) A: 不定式 B: 环式 C: 不等式 D: 平轴式 E: 直轴式 ...
[在线考核] 具有两个或两个以上的脐点、每一个脐点具有各自层纹,外面还包有 日期:2021-05-08 16:57:56 点击:133 好评:0
(单选题)13: 具有两个或两个以上的脐点、每一个脐点具有各自层纹,外面还包有共同的层纹称为 ( ) A: 单粒淀粉 B: 复粒淀粉 C: 半复粒淀粉 D: 复粒和半复粒淀粉 E: 单粒和复粒淀粉 ...
[在线考核] 纹孔的类型有 ( ) 日期:2021-05-08 16:57:31 点击:108 好评:0
(单选题)7: 纹孔的类型有 ( ) A: 半缘纹孔 B: 具缘纹孔 C: 单纹孔 D: 以上均是 E: 以上均不是 ...
[在线考核] 光学显微镜的有效放大倍数一般不超过 ( ) 日期:2021-05-08 16:57:07 点击:177 好评:0
(单选题)1: 光学显微镜的有效放大倍数一般不超过 ( ) A: 600 B: 800 C: 1000 D: 1200 E: 2000 ...
[在线考核] He shall consider it lucky to have _______ the accident. 日期:2021-05-08 16:56:39 点击:136 好评:0
(单选题)45: He shall consider it lucky to have _______ the accident. A: endured B: lived after C: lasted D: survived ...
[在线考核] Having been ______ work for nearly three months, the poor fe 日期:2021-05-08 16:56:15 点击:114 好评:0
(单选题)39: Having been ______ work for nearly three months, the poor fellow has little money left now to buy himself foo A: off B: back to C: at D: out of ...
[在线考核] Bob’s doctor suggests______ for a few days. 日期:2021-05-08 16:55:32 点击:112 好评:0
(单选题)27: Bob’s doctor suggests______ for a few days. A: that he rest B: him to rest C: his resting D: that he is resting ...
[在线考核] He went to the store and _______ a gift for his son. 日期:2021-05-08 16:55:09 点击:71 好评:0
(单选题)21: He went to the store and _______ a gift for his son. A: threw out B: found out C: picked out D: picked up ...
[在线考核] We can rely on him to carry out this mission, for his judgme 日期:2021-05-08 16:54:44 点击:136 好评:0
(单选题)15: We can rely on him to carry out this mission, for his judgment is always _____. A: healthy B: subtle C: sound D: unquestioned ...