Cho hình lăng trụ đứng(AB C. {A_1}{B_1}{C_1}) (A{A_1} = 2asqrt 5 )và(widehat {BAC} = {120^circ }) có(AB = a), (AC = 2a),Gọi(I),(K) lần lượt là trung điểm của các cạnh(B{B_1}),(C{C_1}).Tính khoảng cách từ điểm(I)đến mặt phẳng(left( {{A_1}BK} right)) – Sách Toán – Học toán Link Hoc va de thi 2021
Cho hình chóp(S.ABCD)có đáy(ABCD)là hình thang vuông tại(A)và(B), (AB = BC = a),(Delta ABO).(SA)vuông góc với mặt phẳng(left( {ABCD} right)), đường thẳng(SC)tạo với mặt phẳng(left( {SAB} right))một góc ({30^0}). Khoảng cách từ(A)đến mặt phẳng(left( {SCD} right))bằng – Sách Toán – Học toán Link Hoc va de thi 2021
Question 3: He was awarded a medal in ______of his services to the Queen. Explanation: Phrase: in recognition of: to recognize Remaining answers: in view of sth: consider, because in regards to: related in the light of: in the light of He was awarded a medal for what he did for the Queen. =============== Link […]
Level 38: They bought an old house, ________ and then sold it. Explanation: do sth up (phrV): to decorate, to decorate Remaining answers: redo (v): redo do sth in (v): kill someone overdo (v): to overdo They bought an old house, refurbished it and then sold it. =============== Link Hoc va de thi 2021
Question 30: You have to study hard to _______ your classmates. Explanation: keep pace with (phrV): catch up, on par with Remaining answers: get in touch with sb (phrV): who to contact catch sight of sb (phrV): glimpse someone look out for sb (phrV): watch out for someone, take care of someone You have to […]
Question 15: In Singapore, people try to ____ 80% of all waste. A. reprocess B. reclaim C. recycle D. reuse In Singapore, people try to recycle 80% of what they throw away. =============== Link Hoc va de thi 2021
Question 15: It does not offer a radical social message, but it does ______ reflect the sentiments of many who feel they are victims of an over-mechanized world. knowledge: vocabulary Explain: accurately reflect: reflect accurately It doesn’t deliver a radical social message, but it accurately reflects the feelings of many people who feel they are […]
Question 7: That same year, the US Department of Education reported that 12.2 percent of all children _______ the age of 21 received some form of special education. knowledge: vocabulary Explanation: under the age of: under the age That same year, the United States Department of Education reported that 12.2% of all children under the […]
Advanced SystemCare 15 has just been released a few days ago, this is an upgrade of version 14 with many new features. Advanced SystemCare 15 Full Key is an all-in-one software with many integrated functions such as cleaning, optimizing, speeding up and protecting your computer as well as protecting your privacy. With an intuitive and […]
Question 50: Find mistake: Through the year, scientists have developed smaller but more powerful batteries for the growing number of portable electrical device the number of plural countable nouns : device > devices Over the years, scientists have developed smaller but increasingly powerful batteries for a growing number of portable electrical devices. =============== Link Hoc […]