text: Apple CEO Lisa Jackson said the difficulty of using clean energy, such as wind power and sunlight, is unstable?
classes:  No, according to Dr. Dang Thi My Dung, the most common method of quickly identifying pregnant women is to use a pregnancy test.  Besides, according to Dr. Dang Thi My Dung, the most common method of quickly identifying pregnant women is to use a pregnancy test.  Yes, according to Dr. Dang Thi My Dung, the most common method of quickly identifying pregnant women is to use a pregnancy test.  Meanwhile, according to Dr. Dang Thi My Dung, the most common method of quickly identifying pregnant women is to use a pregnancy test.