7) Substances attacked (2) by moisture should be kept dry . 8) The elements of group I referred to collectively as the sodium family and as alkali metals are among the most chemically active metals. 9) When considering (1) solvent extraction commonly available extractants should be first taken (2) into amount. 10) Having (1) prepared (2) some nearly black amorphous sulphur in the laboratory and examined (2) it the following week the students noticed that it had become (2) brittle and much lighter in colour.
A: Why is Rosa Parks important in American history? B: when she stepped onto a bus for a ride home, she refused to stand up when a white man wanted her seat. A: Why was this important? B: Because the law then required black riders to move when there were no white-only seats left. A: Did the police arrest her? B: Yes, she was charged with a violation of Chapter 6, Section 11 segregation law of the Montgomery City code, she was sent to prison, although technically she had not taken a white-only seat; she had been in a colored section. A: What did the black citizens of Alabama do? B: They protested and they started a boycott not to ride buses. A: Did Rosa Parks die young? B: No, she passed away at the age of 92
8) The elements of group I referred to collectively as the sodium family and as alkali metals are among the most chemically active metals.
9) When considering (1) solvent extraction commonly available extractants should be first taken (2) into amount.
10) Having (1) prepared (2) some nearly black amorphous sulphur in the laboratory and examined (2) it the following week the students noticed that it had become (2) brittle and much lighter in colour.
B: when she stepped onto a bus for a ride home, she refused to stand up when a white man wanted her seat.
A: Why was this important?
B: Because the law then required black riders to move when there were no white-only seats left.
A: Did the police arrest her?
B: Yes, she was charged with a violation of Chapter 6, Section 11 segregation law of the Montgomery City code, she was sent to prison, although technically she had not taken a white-only seat; she had been in a colored section.
A: What did the black citizens of Alabama do?
B: They protested and they started a boycott not to ride buses.
A: Did Rosa Parks die young?
B: No, she passed away at the age of 92