[lemma=construction] [□] | □
[lemma=construction] [□=□] | □
[lemma=construction] [!□] | □
Her other subjects have been Mathematics , in which she continues to try hard without achieving as much success as we think she deserves , Biology , where she is doing really well , and French , which her school only offers as a correspondence course - - not a very satisfactory arrangement for Nikki . Pam has been learning the marimba at weekends : a large xylophone on legs and wheels that spans over three octaves , attacked by up to three players with two beaters each . McCallen notes that Las Vegas , located some 90 kilometers from NTS , lies in a sedimentary basin that traps and amplifies seismic waves . Sometimes Nikki 's parents ca n't really understand what the distinction is between " going out " and not " going out " - - and Nikki tells us we're in good company ; her friends ca n't understand either . Despite all the crowds , the heat , it really is moving and tells an emotional and poignant story . The guidebook advises circumperambulating the lake , a journey of several days through wilderness , but it was late in the season - - and cold ! A movie tells the true tale of a party of school-children , three of whom wander off , two returning bloody , bruised and amnesic after three days , and the other never heard of again , despite extensive searches .