Unit 13 Physical Fitness 1-5 BACBA ACB 1-5 BBAAC BCA Word Match subtract to take (a number, amount, ect.) from something larger dissolve to cause something to end or disappear persevere to continue doing something in spite of difficulties alleviate to make less hard to bear; relieve overtax to demand too much arthritis a disease that causes the joints to become swollen and painful obesity having too much fat in the body stroke an illness caused by a braking or blocked blood vessel in the brain fatigue physical or mental tiredness; exhaustion ; weariness tissue the substance of an organic body or organ diet a limited list of food or drink that one is allowed meditation focusing attention on only one thing so as to be calm and relaxed clearance official permission for someone to do something leisure the time when you are not working ratio the relationship between two things expressed in numbers 1.alleviate 2.fatigue 3.subtract 4.diet 5.clearance 6.persevered 7.ratio 8.leisure Prefixes precede: to come before in time subway: an underground railway physiological: relating to physiology (function of a living organism ) preschool: of early childhood (before elementary school ) subzero: below zero physique: physical build (body size and shape ) subconscious : below the level of conscious perception posthumous : after one's death Cloze 1.long 2. joggers 3.lose 4 .shoes 5. protect 6.difficulty 7. far 8. short 9. distance 10. run SECTION B 1-5 ACBBC ABC SECTION C 1-5 FTTFT FFTTT 本文来源：https://www.wddqw.com/doc/5aa81f0b84c24028915f804d2b160b4e767f810e.html