Đột biến gen phát sinh do các tác tác động lí, hoá hay sinh học ở ngoại cảnh hoặc do những rối loạn sinh lí, hoá sinh của tế bào đã gây ra A. những sai sót trong quá trình nhân đôi của nhiễm sắc thể. B. những sai sót trong quá trình phiên mã C. những sai sót trong quá trình tnhân đôi ADN D. những sai sót trong quá trình phân li của các gen (giải thích chi tiết dùm em ạ :( )

cho 19.6g Cu(OH)2 tác dụng hoàn toàn với 182.5g dd HCl 10% a hỏi chất nào còn dư sau phản ứng và bao nhiêu g b) tính nồng độ % CO2 thu được sau phản ứng

giải thích sự khác nhau về phạm vi nghĩa của các từ nghĩa sau:Đánh-cắn #giúp em em đang cần gấp

IX. Finish each of the following sentences so that its meaning stays the same. 76. I don’t want to go to work this morning. => I don’t feel like _____________________________________________________ 77. Dave said that “Let’s go to the movies”. => Dave suggested ____________________________________________________ 78. It’s not a good idea to drive in the heavy rain. => It’s better to avoid __________________________________________________ 79. Her explanation was so complicated that I couldn’t understand anything. => Her explanation was too______________________________________________ 80. She felt very sleepy, so she went to bed early. => She went _________________________________________________________ 81. Phillips’ mother gave him a bicycle for his birthday. => Phillips was________________________________________________________ 82. The flight to London lasted seven hours. => It took ____________________________________________________________ 83. It is not easy to train horses. => Horses are__________________________________________________ 84. The red car was more beautiful than the blue car. => The blue_________________________________________________________ 85. You can buy many kinds of tax free goods before getting on the plane. => Many kinds of goods _______________________________________________

Tìm ƯCLN (7n+3,8n-1) với n thuộc N*.Tìm điều kiện của n để 2 số đó nguyên tố cùng nhau

Cho 15,5g Na2O tác dụng với H2O thu được 0,5l dung dịch Bazo.Tính Cm dung dịch Bazo

1.Our parents join hands to give us a nice house and a happy home. A. deal with B. manage C. help together D. work together 2.Some of my students are quite _______ and enjoy playing tricks on their friends. A. mischievous B. obedient C. supportive D. passive 3.When he was driving to work , he ____ an accident. A. seeing B. to see C. saw D. had seen 4.Since her first year at university, my sister was allowed _______ the motorbike. A. to ride B. to be ridden C. riding D. ride 5.The number of the participants in the survey _______ 250 students for Oxford University. A. are B. was C. were D. have been

viết bài luận: your free time activities

Vẽ tranh anime nữ vui vẻ nha. Pic 2 trở lên @ bối_bối

VIII. Read the following text and complete the statements below. Sport is one of the UK’s most popular leisure activities, with two- thirds of all adults taking part in one or more sporting activities. Sadly, this is not true for children and young adults. Of all sporting activities, walking is by far the most popular for men and women of all ages. While men tend to dominate golf and “cue sport” such as snooker and billiards, women generally prefer swimming, keep- fit classes and yoga. The UK claims to be among the top five most successful nations in world sport. UK sportsmen and sportswomen hold over 50 world titles in a variety of sports, such as professional boxing, modern pentathlon, rowing, snooker, squash and motorcycle sports. The Government’s view is that sport is an important component of regeneration and can have a beneficial effect in helping the development of run- down areas. 71. Two- thirds of all adults taking part in ______. A. one sporting activities B. many sporting activities C. one or more sporting activities D. no sporting activities 72. Among sporting activities, walking is the most popular for ______. A. children B. men and woman C. young adults D. men only 73. Women generally like ______. A. golf B. keep- fit class C. “cue sports” D. swimming, keep-fit classes and yoga 74. UK sportsmen and sportswomen hold over 50 world titles in ______. A. a variety B. “cue sports” C. motorcycle sports D. keep- fit classes 75. The Government’s view is that sport can have a beneficial effect in helping the development of ______. A. running activities B. neglected areas C. prosperous areas D. remote areas