The word “their” in paragraph 1 refers to ______.
A. Mediterranean Sea plants
B. European settlers
C. the alkalis (potash and soda)
Giải bởi Vietjack
A. Mediterranean Sea plants (Thực vật biển Địa Trung Hải)
B. European settlers (Người định cư châu Âu)
C. the alkalis (potash and soda) (chất kiềm (kali và soda))
D. glass and soap making (làm thủy tinh và xà phòng)
Giải thích:C
Potash (the old name for potassium carbonate) is one of the two alkalis (the other being soda, sodium carbonate) that were used from remote antiquity in the making of glass, and from the early Middle Ages in the making of soap: the former being the product of heating a mixture of alkali and sand, the latter a product of alkali and vegetable oil. Their importance in the communities of colonial North America need hardly be stressed.
Tạm dịch:
Potash (tên cũ của kali cacbonat) là một trong hai chất kiềm (còn lại là soda, natri cacbonat) được sử dụng từ thời xa xưa trong sản xuất thủy tinh và từ đầu thời Trung Cổ trong sản xuất xà phòng: chất trước đây là sản phẩm của việc đun nóng hỗn hợp kiềm và cát, sau này là sản phẩm của kiềm và dầu thực vật. Tầm quan trọng của họ trong các cộng đồng thuộc địa ở Bắc Mỹ hầu như không cần phải nhấn mạnh.
Depending on our choices, (12) ______ scientists predict that the Earth could eventually warm by as little as 2.5 degrees or as much as 10 degrees Fahrenheit.
Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.
We forgot to set the alarm. We woke up late this morning.
The city council passed new regulations for public transportation. Commuters experienced shorter wait times and more efficient routes.
It's been three years since we last dined at that cozy Italian restaurant.
(10) _______ we stopped emitting greenhouse gases (GHGs) today, the Earth would still warm by another degree Fahrenheit or so
This is the point at (14) _______ many believe the most damaging impacts of climate change can be avoided
Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions.
John asked Alex, "What time will the train leave tomorrow?"
A commonly cited goal is to (13) ______ GHG concentrations around 450-550 parts per million (ppm), or about twice pre-industrial levels
Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.
John is talking to Daniel.
- John: “Thanks for the book. I've been looking for it for months.”
- Daniel: “_______”
Jane and Janet are talking about women's roles.
- Jane: "I think married women should not go to work."
- Janet: " ________. I think they should stay at home because they are good at looking after their children and doing housework."
Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
When the speaker began discussing topics she already knew, she became uninterested and started
A B
daydreaming about her upcoming vacation.
C D
