After a week at sea, the sailors saw ______.

答案查看网，轻松搜题/搜资源

【单选题】【消耗次数：1】

① land

② earth

③ ground

④ soil

参考答案：

复制

纠错

相关题目

【单选题】 Just as the soil is a part of the earth, ____ the atmosphere.

① as it is

② so is

③ the same as

④ and so is

查看完整题目与答案

【单选题】 Train services are now back to ____after last week’s strike.?

① ordinary ?

② usual ?

③ normal ?

④ natural?

查看完整题目与答案

【单选题】 After so many weeks without rain, the ground quickly _____the little rain that fell last night.

① skipped

② soaked

③ retrieved

④ absorbed

查看完整题目与答案

【单选题】 Trees mainly serve man in three important ways: They provide him with wood and other products; they provide him shade; and they help to prevent droughts and floods.Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important．In his eagerness to make money from trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear.This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees, their roots break up soil allowing the rain to sink in and also bind(固定) the soil, thus preventing it from being washed away easily；but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When the top-soil is gone, nothing remains but worthless desert.Two thousand years ago，a rich and powerful country cut down its trees to build warships, with which to gain itself an empire．It set up the empire, but, without its trees, its soil became poor and grew weak. When the empire fell to pieces, the home country found itself faced by floods and starvation(饥荒)．Land becomes desert after all trees are cut down because __________.

① roots of trees break up the soil

② no tree keeps the rain and protects the top-soil

③ strong winds bring a lot of sand

④ there are too many rainfalls to make it

查看完整题目与答案

【单选题】阅读理解：阅读下列短文，回答文后问题，选择最佳答案Trees mainly serve man in three important ways: They provide him with wood and other products; they provide him shade; and they help to prevent droughts and floods.Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important．In his eagerness to make money from trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear.This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees, their roots break up soil allowing the rain to sink in and also bind(固定) the soil, thus preventing it from being washed away easily；but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When the top-soil is gone, nothing remains but worthless desert.Two thousand years ago，a rich and powerful country cut down its trees to build warships, with which to gain itself an empire．It set up the empire, but, without its trees, its soil became poor and grew weak. When the empire fell to pieces, the home country found itself faced by floods and starvation(饥荒)．3. Land becomes desert after all trees are cut down because __________.

① A. roots of trees break up the soil

② B. no tree keeps the rain and protects the top-soil

③ C. strong winds bring a lot of sand

④ D. there are too many rainfalls to make it

查看完整题目与答案

【判断题】 Ground floor in America is level with the ground outside(地面一层）.

① 正确

② 错误

查看完整题目与答案

【单选题】 The rain was heavy and ____ the land was flooded.

① consequently

② continuously

③ constantly

④ consistently

查看完整题目与答案

【判断题】 It’s enjoyable to swimming in the sea in summer.

① 正确

② 错误

查看完整题目与答案

【单选题】 Which is [填空] the moon or the earth?

① big

② biger

③ bigger

④ biggest

查看完整题目与答案

【判断题】 Which is big, the moon or the earth ?

① 正确

② 错误

查看完整题目与答案

随机题目

【多选题】《中共中央关于制定国民经济和社会发展第十四个五年规划和二〇三五年远景目标的建议》的核心要义体现在三个“新”上，即（）。

① 以上选项均正确

② 新发展理念

③ 新发展速度

④ 新发展格局

⑤ 新发展阶段

查看完整题目与答案

【多选题】教师专业发展的内涵主要包括（）。

① 教师的专业发展要求教师成为学习者、研究者和合作者。

② 教师的专业发展要求把教师视为“专业人员”。

③ 教师的专业发展首先强调教师是潜力无穷、持续发展的个体。

④ 教师的专业发展要求教师具有发展的自主性。

查看完整题目与答案

【多选题】教师专业发展的前提保证和基本途径分别是（）。

① 行动研究

② 课题研究

③ 终身学习

④ 教学反思

查看完整题目与答案

【多选题】混合制进程国家的典型特点是（）。

① 新兴或复兴国家

② 缺乏原创文化

③ 引进发达国家教育理念

④ 殖民地、半殖民地国家

⑤ 文明古国

查看完整题目与答案

【单选题】（）是一种较为简便的施工方式，操作简单，掌握方便，是施工中常见的连接方式，连接时只要管子切口的端面能与管子轴线保持垂直，并将切口处毛刺清理干净，管件装配时卡环的位置正确，并将螺母旋紧，就能实现铜管的严密连接，主要适用于管径50mm以下的半硬铜管的连接。

① 插接式连接

② 压接式连接

③ 卡套式连接

查看完整题目与答案

【单选题】（）是一种最简便的施工方法，只要将切口的端面能与管子轴线保持垂直并去除毛刺的管子，用力插入管件到底即可，此种连接方法是靠专用管件中的不锈钢夹固圈将钢壁禁锢在管件内，利用管件内与铜管外壁紧密配合的O形橡胶圈来实施密封的，主要适用于管径25mm以下的铜管的连接。

① 卡套式连接

② 压接式连接

③ 插接式连接

查看完整题目与答案

【单选题】可弯曲金属导管布线，管内导线的总截面积不宜超过管内截面积的（）。

① 30%

② 60%

③ 40%

④ 50%

查看完整题目与答案

【单选题】明配的金属、非金属柔性导管固定点间距应均匀，不应大于（）。

① 3m

② 2m

③ 1m

查看完整题目与答案

【单选题】（）是一种较为先进的施工方式，操作也较简单，但需配备专用的且规格齐全的压接机械。连接时管子的切口端面与管子轴线保持垂直，并去除管子的毛刺，然后将管子插入管件到底，再用压接机械将铜管与管件压接成一体。此种连接方法是利用管件凸缘内的橡胶圈来实施密封的，主要适用于管径50mm以下的铜管的连接。

① 插接式连接

② 卡套式连接

③ 压接式连接

查看完整题目与答案

【单选题】对于埋地敷设的钢导管，埋设深度应符合设计要求，钢导管的壁厚应大于（）。

① 2mm

② 1mm

③ 3mm

查看完整题目与答案