Parker admitted feeling anxious about the journey, which he is carrying out with his partner Doug Stoup and is expected to complete in less than a month, but he said, "The best way to respond to pressure is to be as well-prepared as humanly possible."

21. During the expedition, Parker Liautaud will _____.

A. have a tight schedule

B. face all difficulties alone

C. cover 640 kilometres a day

D. drive all the way by himself

22. Why does Parker Liautaud plan to visit the South Pole?

A. To push his own physical limits.

B. To do repairs to a weather station.

C. To do research on climate change.

D. To finish a project in his university.

23. The underlined word "hiatus" in Paragraph 3 probably means "_____".

A. prize B. degree

C. decision D. break

24. What does the author mainly tell us in the text?

A. The climate of the Antarctic keeps changing rapidly.

B. A teenage student prepares for the South Pole record.