题目内容
What Is Cancer Cancer is actually a group of many related diseases that all have to do with cells．Cells are the very small units that make up all (51) things，including the human body．There are billions of cells (52) each person’s body．Cancer happens when cells that are not normal grow (53) spread very fast．Normal body cells grow and divide and know when to stop growing．Over time，they also die. (54) these normal cells，cancer cells just continue to grow and divide out of control and don’t die．Cancer cells usually group together to form tumors(肿瘤)． A growing tumor becomes a lump of cancer cells (55) can destroy the normal cells around the (56) and damage the body’s healthy tissues．This can make someone very (57) Sometimes cancer cells break away from the original tumor and travel to other areas of the (58) where they keep growing and can go on to form new tumors．This is how cancer(59) The spread of a tumor to a new place in the body is(60) metastasis(转移)． People with cancer may feel pretty sick at times—but Call usually still do lots of normal things (61) they are very sick，kids and teenagers with cancer may still be able to go to school．They may be tired Or bruise(出现青肿)easily，but they (62) sometimes go to camp，movies，and sleepover(在外过夜的)parties．People with cancer still like the same things they did (63) they got sick． Cancer in kids is rare—but today, many kids who do get cancer go on living normal lives．The number of kids who beat cancer goes(64) every year because of new cancer treatments．So a lot of kids with cancer will some day drive cars，go to college，have careers，and even get (65) and have families of their own． 58（）
查看答案
搜索结果不匹配？点我反馈
更多问题
论述题 试述人本主义学习理论及其对现代教育实践的启示。
简答题 简述秦朝的立法指导思想。
B市路桥公司承接了西南丘陵地区某二级公路第二合同段的施工，合同段路线长14.5kin，其中K18+300～K18+800段为软土地基，采用袋装砂井处；K20+100～K26+300为膨胀土路段，采用膨胀土作为填料，边坡填筑时采用非膨胀土作为封层，路堑段边坡分两次开挖到设计线，最后封闭。该路段设有排水沟200m，暗沟62m，渗沟43m，渗井7个。路基排水设施施工中主要控制了其测量放样、材质和砌筑工艺，测量放样主要包括排水设施的位置、几何尺寸及形式的控制。施工过程中严格控制排水设施的砌筑及伸缩缝、沉降缝、排水层、反滤层、封闭层等的施工质量。 场景中必须设置排水层、反滤层和封闭层的排水设施是（）。
Step Back in Time Do you know that we live a lot longer now than the people who were born before us One hundred years ago the average woman 1ived to be 45．But now，she Can live until at least 80． One of the main reasons for people living longer is that we know how to look after ourselves better．We know which foods are good for US and what we have to eat to make sure our bodies get all the healthy things they need．We know why we sometimes get ill and what to do to get better again．And we know how important it is to do lots of exercise to keep our hearts beating healthily． But in order that we don’t slip back into bad habits，let’s have a look at what life was like 100 years ago． Families had between 15 and 20 children，athough many babies didn’t live long．Children suffered from lots of diseases，especially rickets(佝偻病)and scurvy(坏血病)，which are both caused by bad diets．This is because many families were very poor and not able to feed their children well． Really poor families who lived in crowded cities like London and Manchester often slept standing up, bending over a piece of string，because there was no room for them to lie down． People didn’t have fridges until the 1920s．They kept fresh food cold by storing it on windowsills(窗台板)，blocks of ice，or even burying it in the garden． Some children had to start work at the age of seven or eight lo earn money for their parents．If you had lived 100 years ago，you might well be selling matchsticks(火柴杆)(a job done by many children)or working with your dad by now． Poor diets can lead to such diseases as rickets and scurvy．（）
微信支付 
支付宝支付