正确答案: C

具膜质托叶鞘

题目：蓼科植物营养器官最突出的特征是( )。

解析：C

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举一反三的答案和解析：

[单选题]颖片相当于( )。

总苞

[多选题]萝蘼科植物花较特化，具多种特殊构造，但并无( )。

距

副萼

解析：AE

[单选题]We can infer from the passage that ______.

physical temperature affects how we see others

[单选题]下列最能体现该模式特点的是( )①循环型 ②高消耗 ③生态化 ④可持续

①③④

[单选题]北极熊变瘦了!科学家说，由亍污染增多，污染物进入北极熊体内使其体型缩小；全球气候变暖，海洋冰面减少．北极熊要花费更多的能量猎食．这样就限制了它的生长。下列选项中与“北极熊减肥“现象所蕴含哲理相一致的是 ①水集鱼聚．术茂鸟集 ②对症下药，量体裁衣 ③上律天时，下袭水土 ④物我一体，心物一体

①③

[单选题]

doubted

[单选题]The last paragraph suggests that Thomas ______.

helps diabetics in his own way

解析：推理判断题。根据But Christopher is the only person I know saying people need help now.可知Thomas在用自己的方式帮助糖尿病人，所以C项正确。A项与Thomas often devotes up to 50 hours a week to his cause, while still doing his full-time job waiting tables不符；B项与Even with a staff of 22 volunteers；D项与"Of the diabetes charities out there, most are putting money into finding a cure," says Bentley Gubar, one of Rockstar's original members. "But Christopher is the only person I know saying people need help now."不符。

[单选题]

witnessed

[单选题]41____.

form