logo - 刷刷题
下载APP
【单选题】

At this part of the lake there occurs a deep bay or inlet(水湾, 小港), to save rounding which travelers usually strike straight【B1】from point to point, what is called in voyageur parlance(俗话) a traverse(横渡).These traverses are subjects of【B2】anxiety, and【B3】of delay to travelers. Being sometimes of considerable extent,【B4】from four and five—and in such immense seas as lake Superior—to four miles. With boats, indeed, there is【B5】to fear,【B6】the inland craft of the fur traders can stand a heavy sea, and often ride out a pretty【B7】storm but it is far otherwise with the bark canoes that are often used in【B8】. These frail craft can stand very little sea—their frames being made of thin flat slips of wood and sheets of bark, not【B9】than a quarter of an inch thick, which are sewed together with the fibrous roots of the pine【B10】by the natives, and rendered water-tight by【B11】of melted gum(树胶). Although light and【B12】,【B13】, and extremely useful in a country where portages are【B14】, they【B15】very tender usage and when a traverse has to be made, the guides have always a grave【B16】with some of the most sagacious(有远见的) among the men, us to the probability of the wind rising or【B17】 consultations which are more or【B18】marked by【B19】and tediousness in proportion to the length of the traverse, the state of the weather, and the courage or【B20】of the guides. 【B1】

A.
across
B.
cross
C.
crossing
D.
crossed
题目标签:树胶水湾远见
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】树脂、树胶等药物宜用的粉碎方法是( )

A.
干法粉碎
B.
湿法粉碎
C.
低温粉碎
D.
高温粉碎

【单选题】梅毒树胶肿病灶中绝少见到

A.
凝固性坏死
B.
上皮样细胞
C.
朗格汉斯巨细胞
D.
淋巴细胞和浆细胞
E.
钙化

【多选题】下列有关树胶的性质,描述正确的是( )

A.
能溶于水或吸水膨胀
B.
不溶于有机溶剂
C.
加热后碳化,发出焦糖样气味
D.
无一定的熔点
E.
属于多糖类