Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks

HOME LIFE

"Parents today want their kids spending time on things that can bring them success, but (1)_________, we've stopped doing one thing that's actually been a proven predictor of success-and that's household chores," says Richard Rende, a (2)_________ psychologist in Paradise Valley, Ariz, and co-author of forthcoming book “Raising Can-Do Kids." Decades of studies show the benefits of chores-academically, emotionally and even professionally. Giving children household chores at an early age (3)_______ to build a lasting sense of mastery, responsibility and self-reliance, according to research by Marty Rossmann, professor emeritus at the University of Minnesota. In 2002, Dr. Rossmann analyzed data from a longitudinal study (4)_______ followed 84 children across four periods in their lives-in preschool, around ages 10 and 15, and in their mid-20s. She found that young adults who began chores at ages 3 and 4 were more likely to have good relationships with family and friends, to achieve academic and early career success and to be self-sufficient, as (5)_______ with those who didn't have chores or who started them as teens. Chores also teach children how to be empathetic and responsive to others' needs, notes psychologist Richard Weissbourd of the Harvard Graduate School of Education.

Điền ô số 4

A. whom 

B. that 

C. what 

D. when 

Xảy ra pứ

SO2 + Br2 + 2H20 ------ 2HBr + H2SO4

Làm mất màu dung dịch Br2

Khi thuỷ phân một triglixerit X, thu được các axit béo gồm axit oleic, axit panmitic, axit stearic. Thể tích khí O2 (đktc) cần để đốt cháy hoàn toàn 8,6 gam X là 

A. 15,680 lít 

B. 20,160 lít 

C. 17,472 lít

D. 16,128 lít 

Ở điều kiện thường, chất nào sau đây là chất khí?

A. Glixerol.

B. Axit axetic

C. Anđehit fomic

D. etanol

Hãy điền những giá trị chưa biết vào những ô trống trong bảng, bằng cách thực hiện các tính toán theo mỗi cột.

Dung dịch chất X làm quỳ tím chuyển thành màu hồng. Chất X có thể là

A. CH₃-CH(NH₂)-COOH

B. H₂N-[CH₂]₄-CH(NH₂)-COOH.

C. (CH₃)₂CH-CH(NH₂)-COOH

D. HOOC-[CH₂]₂-CH(NH₂)-COOH