第一节(共15小题；每小题2分，满分30分)
阅读下列短文，从每题所给的四个选项(A、B、C、和D)中，选出最佳选项，并在答题卡上将该项涂黑。
A
Online courses offer people abundant opportunities to learn. Try some of the Harvard online courses about humanities.
The Path to Happiness
From Confucianism to Daoism, the philosophies developed over two thousand years ago are among the most powerful in human history. This course brings voices from the past into modem contexts to explore the path to a good life today.
Duration: June 16, 2021-February 1, 2022
Fees: Free of charge
Pace: Self-paced
Difficulty: Introductory
Introduction to the Ancient Greek World
This course is about ancient Greece with its unique places, ways of life and historical changes. We survey the most important social institutions and cultural traditions. We also study everyday features such as food and dress.
Duration: June, 21-November 9, 2021
Fees: $3400+
Pace: Instructor-led
Difficulty: Introductory
Biotechnology and the Human Good
Biotechnology offers exciting and promising prospects for healing the sick and relieving the suffering. In this course we consider possible functions beyond medical treatments like making people look younger, perform better and become perfect.
Duration: June 21-August 6, 2021
Fees: $3400+
Pace: Instructor-led
Difficulty: Intermediate
Superheroes and Power
What makes superheroes popular? How can they help us think about super powers? In this course, we explore those questions in Marvel and DC favorites (especially the X-Men) as well as independent comics novels.
Duration: June 22-August 6, 2021
Fees:$3400+
Pace: Instructor-led
Difficulty: Intermediate
21. Which course can you take if you are free in December, 2021?
A. The Path to Happiness. B. Introduction to the Ancient Greek World.
C. Biotechnology and the Human Good. D. Superheroes and Power.
22. What does Biotechnology and the Human Good deal with?
A. Powers of superheroes. B. Ways to increase happiness.
C. More uses of biotech. D. Clinical practices of biotech.
23. What do the four courses have in common?
A. They are of the same level. B. They are free of charge.
C. They are instructor-led. D. They belong to the same subject.
