[单项选择]Passage 4

The texture of the soil depends on the relative amounts of different-sized particles that combine to make up the soil. These particles can be as large as stone and gravel or as small as clay. A typical clay soil is composed of approximately 60 percent actual clay, 20 percent silt, and 20 percent sand. The particles in a sandy soil are so fine that it tends to be compact and interferes with the oxygen supply for plant roots. Water has trouble entering this impervious soil, and runoff is very common during rainfalls. A typical light sandy soil is composed of approximately 70 percent sand, 20 percent silt, and 10 percent clay. The particles in a sandy soil are comparatively large, permitting water to enter the soil and to pass through it so quickly that it often carries nutrients with it and dries out very rapidly. The texture of A. It sinks in slowly, days later the soil is still saturted. B. It sinks in quickly, a few hours later the soil is almost dry. C. It runs off the surface and does not enter the soil. D. It cracks the surface of the soil. 查看答案 更多"Passage 4 The texture of "的相关试题: [单项选择]Passage 4 The texture of the soil depends on the relative amounts of different-sized particles that combine to make up the soil. These particles can be as large as stone and gravel or as small as clay. A typical clay soil is composed of approximately 60 percent actual clay, 20 percent silt, and 20 percent sand. The particles in a sandy soil are so fine that it tends to be compact and interferes with the oxygen supply for plant roots. Water has trouble entering this impervious soil, and runoff is very common during rainfalls. A typical light sandy soil is composed of approximately 70 percent sand, 20 percent silt, and 10 percent clay. The particles in a sandy soil are comparatively large, permitting water to enter the soil and to pass through it so quickly that it often carries nutrients with it and dries out very rapidly. The texture of A. To tell gardeners how to modify their soil. B. To classify soil types on the basis of their composition. C. To illustrate the effects of soil type on plant growth. D. To show how water is absorbed by different soil. 查看答案 [单项选择]The texture of the soil depends on the relative amounts of different-sized particles that combine to make up the soil. These particles can be as large as stone and gravel or as small as clay. A typical clay soil is composed of approximately 60 percent actual clay, 20 percent silt, and 20 percent sand. The particles in a sandy soil are so fine that it tends to be compact and interferes with the oxygen supply for plant roots. Water has trouble entering this impervious soil, and runoff is very common during rainfalls. A typical light sandy soil is composed of approximately 70 percent sand, 20 percent silt, and 10 percent clay. The particles in a sandy soil are comparatively large, permitting water to enter the soil and to pass through it so quickly that it often carries nutrients with it and dries out very rapidly. The texture of sandy soils is generally very difficult to modify because huge amounts of organic material must be added. A typical loam soil is composed of appro A. To tell gardeners how to modify their soil. B. To classify soil types on the basis of their composition. C. To illustrate the effects of soil type on plant growth. D. To show how water is absorbed by different soil. 查看答案 [单项选择]According to the passage, virgin-soil epidemics can be distinguished from other catastrophic out- breaks of diseases in that virgin-soil epidemics______. [A] recur more frequently than chronic diseases [C] usually involve a number of interacting diseases [B] involve populations with no prior exposure to a disease [D] are less responsive to medical treatment than are other diseases A. According to the passage, virgin-soil epidemics can be distinguished from other catastrophic out- breaks of diseases in that virgin-soil epidemics______. B. recur more frequently than chronic diseases C. involve populations with no prior exposure to a disease D. usually involve a number of interacting diseases E. are less responsive to medical treatment than are other diseases 查看答案 [简答题]Passage Two A. A．a national electronic-money system B．a bank-card system C．lowered income - tax rates D．fund - transfer technology 查看答案 [简答题] Passage 2 查看答案 我来回答: 提交 最新试题 ●    [判断题] 由于运营成本和风险的不同,因此商业银行的钞买价比汇买价要高。() ●    Passage 4 The texture of the soil depend ●    [单选题]电器或线路拆除后，可能来电的线头( ).。 ●    [单选题]低血糖的临床表现及处理要点哪项不正确: ●    [单选题]自营不良贷款的管理模式为（ ）。 ●    [单选题]通票有效期自指定乘车日起至有效期最后一日的（ ）止。 网站地图 我要搜题网  版权所有  ©2023  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码